Icfo Math 9
Icfo Math 9
CA
AL
                                                                          CT
                                                                            OR
                                              NATION
                                                                               OLYMPIA
                                           TER
                                         IN
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                                                              U SIS W A
                                                                                           WITH
                                                                                               ER
                                                                                          ANSW
                                                                                            KEY
                                 CT
                                   OR
     NATION
                                                   PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                   Registered in the Indonesian Directorate General of General Law Administration's database
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                                             D
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                     U SIS W A
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                                                         BRIDGE F
                                                 on time.
                                                       M
                                                    CA is on the final page;
                                       c. The answer key               A please
                                                 correct it yourself.
                                                              AL
                                                                                                      CT
                       2. Medals can be obtained based on the following
                                                                                                        OR
                                                        NATION
                            scores:
                                                                                                           OLYMP
                                                                                                                I
                                                     T
                                                                                                                 A
                                                    N
                                                                                                                  D
                                                   I
                                                                    ED
                                                                            U SIS W A
                CA
                  MBRIDGE FA                     INTERNATIONAL CAMBRIDGE FACTOR OLYMPIAD MATHEMATIC PRACTICE PAPER GRADE 9
                                                 Developed and distributed by
           AL
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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a.
b.
c.
d.
                                                                                                    CT
                                      b.
                                                                                                      OR
                                                      NATION
                                       c.
                                                                                                         OLYMP
                                      d.
                                                     R
                                                                                                              I
                                                   T
                                      a. 61
                                                                                                               A
                                                  N
                                                                                                                D
                                                 I
                                      b. 62
                                                                  ED
                                       c. 63                              U SIS W A
                                      d. 64
                 4. How many divisors of 10,125 are perfect cubes?
                                      a. 3
                                      b. 4
                                       c. 5
                                      d. 6
                CA
                  MBRIDGE FA                     INTERNATIONAL CAMBRIDGE FACTOR OLYMPIAD MATHEMATIC PRACTICE PAPER GRADE 9
                                                 Developed and distributed by
           AL
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                             RID THE?
                 What is the area of the triangle
                                                                   MB                   GE
                                                                                           FA
                                      a.                         CA
                                      b.
                                                            AL
                                                                                                    CT
                                                                                                      OR
                                                      NATION
                                       c.
                                      d.
                                                                                                         OLYMP
                                                                                                              I
                                                   T
                                                                                                               A
                                                  N
                                                                                                                D
                                                 I
                                                                  ED
                 How many liters is the volume of the cube?               U SIS W A
                                      a. 1 liter
                                      b. 2 liter
                                       c. 3 liter
                                      d. 4 liter
                 7. Dara was paid $125 for tutoring five days after school
                 for the Chen family.
                CA
                  MBRIDGE FA                     INTERNATIONAL CAMBRIDGE FACTOR OLYMPIAD MATHEMATIC PRACTICE PAPER GRADE 9
                                                 Developed and distributed by
           AL
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                 Each day Mrs. Chen paid her $3 more than the day
                 before. How much money did she earn on the first day?
                                      a. $115
                                      b. $120
                                       c. $125
                                      d. $130
                                                                                                    CT
                                                                                                      OR
                                                      NATION
                                      a. -6
                                      b. -8
                                                                                                         OLYMP
                                       c. 4
                                      d. 14
                                                    ER
                                                                                                               A
                                                  N
                                                                                                                D
                                                 I
                                                                  ED
                                                                          U SIS W A
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                      a. 48 sq. units
                                      b. 60 sq. units
                                       c. 72 sq. units
                                      d. 108 sq. units
                 10. A machine produces 1250 pencils in five hours. How
                 many pencils can the machine produce in 12.5 hours?
                                      a. 3125
                                                                   MBRIDGE F
                                                                 CA
                                      b. 2525
                                                                            A
                                       c. 3625
                                                            AL
                                                                                                    CT
                                      d. 2615                                                         OR
                                                      NATION
                                      a. 30
                                                    E
                                      b. 24
                                                   T
                                                                                                               A
                                                  N
                                       c. 28
                                                 I
                                                                  ED
                                                                          U SIS W A
                                      d. 22
                 12. If f(x) =
                 which of the following is the minimum value of the
                 function?
                                      a.
                                      b.
                                       c.
                                      d.
                CA
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                                                   Developed and distributed by
           AL
                                 CT
                                   OR
     NATION
                                                   PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                   Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                                                                                      CT
                                                                                                        OR
                                                        NATION
                                      a. 9
                                      b. 17
                                                                                                           OLYMP
                                       c. 21
                                      d. 23
                                                      ER
                 15. If 4x28x-4,
                                                                                                                I
                                                     T
                                                                                                                 A
                                                    N
                 (no 2)                                             ED
                                      a. 1                                  U SIS W A
                                      b. 2
                                       c. 3
                                      d. 4
                 16. Three fair six-sided dice are thrown, What is the
                 probability that the sum of the outcomes is even?
                CA
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                                                 Developed and distributed by
           AL
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                      a. ½
                                      b. ⅓
                                       c. ¼
                                      d. ⅙
                 17. Mr. Dasgupta had 144 kg of red and green beans.
                 25% of the beans were red. He bought some more red
                 beans and the percentage of red beans increased to
                                     M B of red beans
                                                E F did he buy?                 RIDG
                                   A
                 40%. How many kilograms
                                                                 C                                A
                                      a. 36
                                                            AL
                                                                                                    CT
                                      b. 54
                                                                                                      OR
                                                      NATION
                                       c. 72
                                                                                                         OLYMP
                                      d. 108
                 18. The congruent trapezoids below are joined together
                                                     R
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                 Find the number of trapezoid so that it can form a
                 closed ring
                                      a. 12
                                      b. 16
                                       c. 18
                                      d. 20
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                                                 Developed and distributed by
           AL
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                                                                                    CT
                                                                                                      OR
                                                      NATION
                                      a. 16
                                      b. 25
                                                                                                         OLYMP
                                       c. 36
                                      d. 49
                                                    ER
                                                                                                               A
                                                  N
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                      a. 25 degree
                                      b. 30 degree
                                       c. 45 degree
                                      d. 60 degree
                 23. In the diagram, the two triangles shown have
                 parallel bases. What is the ratio of the area of the
                 smaller triangle to the area IDthe larger triangle?
                                            Rof                    MB                   GE
                                                                                           FA
                                                                 CA
                                                            AL
                                                                                                    CT
                                                                                                      OR
                                                      NATION
OLYMP
                                      a. 2:5
                                      b. 1:5
                                                    ER
                                       c. 4:10
                                                                                                              I
                                                   T
                                                                                                               A
                                                  N
                                      d. 4:25
                                                                                                                D
                                                 I
                                                                  ED
                 24. What is the number of square centimeters in the
                 surface area of a cube whose edge measures 3 cm?         U SIS W A
                CA
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                                                 Developed and distributed by
           AL
                                 CT
                                   OR
     NATION
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                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                      a. 54 square centimeter
                                      b. 63 square centimeter
                                       c. 72 square centimeter
                                      d. 81 square centimeter
                 25. If altitude CD is                                  centimeters, what is the number
                 of square centimeter is the area of                                               ABC?
                                                                   MBRIDGE F
                                                                 CA         A
                                                            AL
                                                                                                    CT
                                                                                                      OR
                                                      NATION
                                      a. 2.1 cm
                                      b. 2.5 cm
                                                    ER
                                       c. 3.8 cm
                                                                                                              I
                                                   T
                                                                                                               A
                                                  N
                                      d. 3.5 cm
                                                                                                                D
                                                 I
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                                      MBRIDGE F
                                      d. 1235
                                   CA shows a rectangle
                 28. The given diagram
                                                   A ABCD being
                                                            AL
                                                                                                    CT
                 folded along a straight segment AE with E on CD, so that                             OR
                                                      NATION
                                                                                                              I
                                                   T
                                                                                                               A
                                                  N
                                                                                                                D
                                                 I
                                                                  ED
                                                                          U SIS W A
                                 CT
                                   OR
     NATION
                                                 PT EDUSISWA UNTUK NEGERI
                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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                 Find a+b
                                      a. -3
                                                                   MBRIDGE F
                                      b. -2                      CA         A
                                       c. 3
                                                            AL
                                                                                                    CT
                                                                                                      OR
                                                      NATION
                                      d. 4
                 30. Find the area of the isosceles trapezoid in square
                                                                                                         OLYMP
                 feet.
                                                    ER
                                                                                                              I
                                                   T
                                                                                                               A
                                                  N
                                                                                                                D
                                                 I
                                      a. 27 √10                   ED
                                      b. 30 √10                           U SIS W A
                                       c. 32 √10
                                      d. 33
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           AL
                                 CT
                                   OR
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                                      OLYMPIA
                                                 Registered in the Indonesian Directorate General of General Law Administration's database
  TER
IN
                                             D
                ED
                     U SIS W A
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ANSWER KEY
                            1. A
                            2. C
                            3. A
                            4. B
                            5. A
                            6. A
                            7. C
                                                                    BRIDGE F
                            8. A
                                                                   M
                                                                 CA         A
                            9. B
                           10. A
                                                            AL
                           11. A
                                                                                                    CT
                           12. B
                                                                                                      OR
                                                      NATION
                           13. B
                                                                                                         OLYMP
                           14. C
                           15. A
                           16. A
                                                     R
                           17. A
                                                    E
                           18. C
                                                                                                              I
                                                   T
                                                                                                               A
                                                  N
                           19. B
                                                                                                                D
                                                 I
                           20. B
                                                                  ED
                                                                          U SIS W A
                           21. D
                           22. C
                           23. D
                           24. A
                           25. D
                           26. B
                           27. A
                           28. A
                           29. B
                           30. B