Galaxy: Class VII
UNIT 1: Number System
Worksheet: Multiple Choice Questions
Choose the correct answer.
1. Find the sum of the place values of 1 and 0 in 905102.
a. 100 b. 1000 c. 10000 d. 0
2. How many numbers between 1000 and 1100 are divisible by 7?
a. 14 b. 15 c. 16 d. None of these
3. Find the value of -|-10| - |-100| + |119 - 229|.
a. 20 b. 10 c. 0 d. 3
4. What is the product of the smallest positive integer and the largest negative
integer?
a. 0 b. 1 c. 2 d. -1
5. Find the number which when divided by 13 leaves remainder 12 and quotient being
10.
a. 142 b. 130 c. 118 d. 129
6. What is the sum of a number and its additive inverse?
a. -1 b. 0 c. 1 d. None of these
7. Find the difference between the largest 5-digit number and the smallest 4-digit
number.
a. 89999 b. 99899 c. 98999 d. 98000
8. Find the HCF of 58 and 97.
a. 0 b. 2 c. 3 d. 1
9. How many times will factor 7 occur if the number 24500 is expressed as the
product of prime factors?
a. 2 b. 3 c. 1 d. 0
10. How many prime numbers are there up-to 60?
a. 16 b. 17 c. 18 d. 19
(c) Oxford University Press
11. Find the largest number that divides 167, 326 and 485 leaving remainders 7, 6 and
5 respectively.
a. 20 b. 40 c. 160 d. 180
12. Find the LCM of the numbers 36, 72 and 96.
a. 480 b. 720 c. 240 d. 288
13. LCM and HCF of two numbers are 72 and 35. If one of the numbers is 30, find
the other.
a. 84 b. 88 c. 92 d. 96
14. Reduce the fraction to its lowest form.
a. b. c. d.
15. A student read of a single book on the first day, on the second, on the
third day and the rest on the fourth. On which day did the student read more?
a. first day b. third day
c. fourth day d. second day
16. Evaluate .
a. b. c. d. 9
17. Evaluate
a. 3 b. c. 5 d.
18. Evaluate
a. 100 b. c. 230 d. 380
19. Find the greatest number of 3-digit which when divided by 7, 9 and 11 leaves a
remainder 3 in each case.
(c) Oxford University Press
a. 996 b. 896 c. 696 d. 596
20. Cloth of lengths 91m, 156m and 221m are to be cut into pieces of equal length
without wasting any material. What is the longest possible length?
a. 10m b. 11m c. 12m d. 13m
21. Three cars are moving in a circular field-track. The first car takes 18 minutes to
complete a round, the second takes 20 minutes and the third takes 24 minutes to
do so. In how many minutes will they meet if they all set off together?
a. 360 min b. 240 minutes
c. 180 minutes d. 120 minutes
22. Write the fractions in ascending order.
a. b. c. d. None of these
23. of the total population of a village are children. of the remaining are men and
the rest are women. If there are 160 women in the village, calculate the number of
men.
a. 100 b. 150 c. 200 d. 250
24. An article was sold at of the market price and the loss is ₹ 200. What was the
market price?
a. ₹ 650 b. ₹ 750 c. ₹ 850 d. ₹ 900
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25. Mrs Sen writes her will giving to her elder daughter and the remaining is to be
divided equally between her younger daughter and her husband. If the husband
received ₹ 5 lakh, how much did the elder daughter receive?
a. ₹ 4 lakh b. ₹ 5 lakh c. ₹ 6 lakh d. none of these
26. Mr Sunil spends half of his monthly income on household expenses. He used
(c) Oxford University Press
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of the remaining on his personal expenses and saves the rest. If his savings for
a month is ₹ 19800 find his monthly household expenses.
a. ₹ 30000 b. ₹ 33000 c. ₹ 35000 d. none of these
27. Spending of my money and then giving ₹ 3000 to my sister, ₹ 2000
was still left with me. What amount did I have?
a. ₹ 21500 b. ₹ 32000 c. ₹ 32500 d. ₹ 33000
28. Find the place value of 2 in0.00235
a. 2 b. 200 c. d.
29. Round off the number 17.678 correct to three significant figures.
a. 17.7 b. 17.6 c. 17.5 d. 17.0
30. Round off the number 400 correct to 3 significant figures.
a. 40 b. 4.00 × 100
c. 40 × 10 d. None of these
31. Round off the number 7.5237 correct to 2 places of decimal.
a. 7.60 b. 7.54 c. 7.52 d. None of these
32. What is the place value of 3 when is converted to decimal representation?
a. 0 b. 30 c. 300 d. 3
33. Evaluate correct to 3 significant figures.
a. 122 b. 123 c. 124 d. 125
34. Evaluate
a. 12 b. 6 c. 3 d. 2
2 3
35. What is the value of 17 − 5 2 when x = 2 and y = -1.
a. 248 b. 372 c. -78 d. -33
(c) Oxford University Press
36. Find the value of
a. 2−1 b. 2−2 c. 2−3 d. 2−4
37. A cube has its edge 9cm. How many small cubes of edge 3cm can fit inside it?
a. 27 b. 24 c. 12 d. 3
38. Find the least number which is to be multiplied with 4608 to make it a perfect
cube?
a. 2 b. 3 c. 4 d. none of these
39. Find the square root of
a. 7 b. 9 c. 11 d. 13
40. A number is squared and the same number is cubed. Then their product is divided
by 310 and the result is -1. What is the number?
a. 1 b. 2 c. -3 d. -9
(c) Oxford University Press
