Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 531 · 40 questions

The method (Spot the type): Read the question and name the topic: HCF/LCM, fraction, ratio, percent … Use that lesson’s method and write each step. Check: is the answer sensible in size and units?

1. 1.Kabir takes 30 seconds and Saanvi takes 54 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
2. 2.Round 11710 to the nearest hundred.
3. 3.46 + 9 × 11 − 26 =
4. 4.What is the smallest number you must add to 205 so that it divides exactly by 3?
5. 5.A car goes 200 km on 10 litres of petrol. How far can it go on 39 litres (in km)?
6. 6.Find the HCF of 120 and 135.
7. 7.25 + 11 × 6 − 21 =
8. 8.Which is closest to 502 × 80? (Round each number first.) (a) 4000 (b) 80000 (c) 400000 (d) 40000
9. 9.Three temple bells ring every 12, 30 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
10. 10.What is the smallest number you must add to 996 so that it divides exactly by 9?
11. 11.5% of a number is 26. What is the number?
12. 12.Which is closest to 696 + 801 + 604? (a) 2200 (b) 2000 (c) 2300 (d) 2100
13. 13.Find the HCF of 16 and 28.
14. 14.Find the LCM of 15, 3 and 12.
15. 15.What is the smallest number you must add to 760 so that it divides exactly by 11?
16. 16.Find the LCM of 12, 14 and 2.
17. 17.What is the smallest number you must add to 610 so that it divides exactly by 3?
18. 18.What is the smallest number you must add to 153 so that it divides exactly by 4?
19. 19.40% of a number is 70. What is the number?
20. 20.7/9 + 4/8 =
21. 21.How many factors does 81 have?
22. 22.Three temple bells ring every 30, 20 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
23. 23.Tara takes 80 seconds and Isha takes 90 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
24. 24.Pooja takes 80 seconds and Priya takes 60 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
25. 25.The HCF of two numbers is 9 and their LCM is 126. One of the numbers is 18. What is the other number?
26. 26.Divide ₹210 between Pooja and Vivaan in the ratio 5 : 2. How much does Pooja get (in ₹)?
27. 27.What percent of 50 is 32?
28. 28.Which is closest to 903 ÷ 31? (a) 30 (b) 300 (c) 15 (d) 60
29. 29.Which is closest to 695 + 800 + 503? (a) 2100 (b) 2200 (c) 1900 (d) 2000
30. 30.Round 16.58 to one decimal place. =
31. 31.How many factors does 26 have?
32. 32.Which of these numbers divides exactly by 6? (a) 7629 (b) 1352 (c) 6588 (d) 1688
33. 33.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
34. 34.The HCF of two numbers is 7 and their LCM is 84. One of the numbers is 21. What is the other number?
35. 35.Round 39.91 to one decimal place. =
36. 36.Which is closest to 801 + 899 + 198? (a) 1800 (b) 1900 (c) 2100 (d) 2000
37. 37.Which is closest to 201 × 29? (Round each number first.) (a) 6000 (b) 12000 (c) 60000 (d) 600
38. 38.If 5 kg of rice costs ₹165, how many kg can you buy for ₹396?
39. 39.A car goes 42 km on 3 litres of petrol. How far can it go on 24 litres (in km)?
40. 40.Find the LCM of 2, 7 and 5.

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