QUESTIONS 1 TO 10 ARE WORTH 3. Find the missing numbers.

3 MARKS EACH
1, 2, 4, 7, 11, ( ) ,( ), 29, 37, …
1. Find the value of
(A) 15, 21
9 + 99 + 999
(B) 16, 22
(A) 1107
(C) 16, 23
(B) 1108
(D) 15, 22
(C) 1109
(E) 17, 24
(D) 1110
4. Find the area of the shaded region, in
(E) None of the above cm2 .

2. Find the missing number in Figure 3.

(A) 4

(B) 6

(C) 8

(D) 10

(E) 12

5. There are 18 chickens and rabbits in a

farm. Altogether there are 58 legs.
(A) 1
How many rabbits are there?
(B) 2

(C) 3

(D) 4
(A) 8
(E) 5
(B) 9

(C) 10

(D) 11

(E) 12

SEAMO 2022 Paper A 1

6. The perimeter of a figure is found by 8. How many squares are there
measuring the total length of its altogether in the figure below?
outline. Each figure below is made up
of 6 small rectangles. Which of the
following statements is TRUE?

(A) 15

(B) 19

(C) 23

(D) 24

(A) Figure 1 and Figure 4 have the (E) 25

same perimeter.
9. Find the value of
(B) Figure 2 and Figure 3 have the
same perimeter. 1 − 2 + 3 − 4 + 5 − 6 + ⋯ − 20 + 21

(C) Figure 1 has the largest (A) 11

perimeter.
(B) 13
(D) Figure 3 has the largest
(C) 15
perimeter.

(E) Figure 4 has the largest (D) 17

perimeter.
(E) 21
7. Mark saw the reflection of an old
10. Find the 3-digit number 𝐴𝐵𝐶
̅̅̅̅̅̅ , such
clock. What was the actual time?
that

(A) 2.35 pm (A) 196

(B) 3.15 pm (B) 197

(C) 4.15 pm (C) 198

(D) 4.45 pm (D) 199

(E) None of the above (E) 200

2 SEAMO 2022 Paper A

 QUESTIONS 11 TO 20 ARE WORTH 13. Each circle represents a number. The
5 MARKS EACH number in the last circle is shown
below. What is the number in the 1st
11. How many shortest paths are there
circle?
from 𝐴 to 𝐵 ? Follow the direction of
the arrows.

(A) 5

(B) 4

(C) 3

(D) 2

(E) 1

14. There are 5 black, 3 orange and 4 red

(A) 5 balls in a bag. Without looking into
the bag, how many balls must Shawn
(B) 6
take so he will have at least 1 ball of
(C) 7 each colour?

(D) 8 (A) 8

(E) 9 (B) 9

12. The sum of dates of all Wednesdays (C) 10

in a certain month is 66 . On which
(D) 11
day of the week was the 1 st day of
the month? (E) 12

15. There are 5 steps to a flight of stairs.

Chatdanai can take 1 or 2 steps up at
a time. How many ways are there for
him to do so?

(A) 7
(A) Monday
(B) 8
(B) Tuesday
(C) 9
(C) Wednesday
(D) 10
(D) Thursday
(E) 12
(E) Friday

SEAMO 2022 Paper A 3

16. The teacher has a bag of sweets. If 18. Put “+”, “−”, “×” or “÷” in the
she gives each student 7 sweets, 3 to make the following number
sweets remain. If she gives each statement work.
student 8 sweets, she needs another
5 sweets. How many sweets does the 3 3 3 3=7
teacher have?
(A) − , +, ×

(B) + , −, +

(C) ×, ×, ÷

(D) + , +, ÷

(E) − , −, ÷

19. It is given:

 +  + ◯ = 48
(A) 58
 +  +  = 47
(B) 59
 +  +  = 46
(C) 60
Find the value of ◯.
(D) 61
(A) 15
(E) 62
(B) 16
17. Find the value of 𝐴 in Figure 3.
(C) 17

(D) 18

(E) 20

(A) 1

(B) 2

(C) 3

(D) 4

(E) 5

4 SEAMO 2022 Paper A

20. A cube has 6 faces. The object shown 23. How many chicks have the same
is made up of 8 cubes. How many weight as ONE rabbit?
cubes will have 4 faces painted if the
object is painted yellow?

(A) 3

(B) 4

(C) 5

(D) 6

(E) 7

QUESTIONS 21 TO 25 ARE WORTH

6 MARKS EACH

21. Which numbers below has a

remainder of 2 when divided by 3?

12, 362, 135, 28, 94

24. Find the value of ✰.
71, 29, 83, 125, 142
 +  = ( )
22. The swimming coach asked his new  −  = ( )
students if they can swim.
 ×  = ( )

+  ÷  = ( )
Mink: I can swim.
100
Kamjai: Mink is lying.
Chatdanai: Kamjai can swim. 25. Vivian bought one cheese burger and
a pack of French fries for $9.70 .
Wendy paid $26.60 for 3 cheese
If one person is lying and only one burgers and 2 packs of French fries.
person can swim, who is the How much is a pack of French fries in
cents?
swimmer?

End of Paper

SEAMO 2022 Paper A 5

!

YOU MAY USE THIS PAGE FOR ROUGH WORKINGS