Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 408 · 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.Which is closest to 503 × 90? (Round each number first.) (a) 4500 (b) 90000 (c) 450000 (d) 45000
2. 2.What is the smallest number you must take away from 515 so that it divides exactly by 8?
3. 3.Divide ₹441 between Priya and Kavya in the ratio 1 : 8. How much does Kavya get (in ₹)?
4. 4.Find the LCM of 8 and 14.
5. 5.What percent of 50 is 28?
6. 6.A car goes 240 km on 10 litres of petrol. How far can it go on 28 litres (in km)?
7. 7.10% of a number is 21. What is the number?
8. 8.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
9. 9.A hall floor is 315 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
10. 10.The HCF of two numbers is 9 and their LCM is 315. One of the numbers is 45. What is the other number?
11. 11.5 : 12 = 15 : ?
12. 12.Which of these numbers divides exactly by 3? (a) 5725 (b) 5096 (c) 2451 (d) 1511
13. 13.Divide ₹70 between Diya and Farhan in the ratio 3 : 2. How much does Farhan get (in ₹)?
14. 14.Three temple bells ring every 6, 18 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
15. 15.Three temple bells ring every 24, 15 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
16. 16.2 × (17 − 16) + 56 ÷ 8 =
17. 17.Which is closest to 1598 ÷ 39? (a) 400 (b) 20 (c) 40 (d) 80
18. 18.11 painters can paint a school in 5 days. How many days would 5 painters take, working at the same speed?
19. 19.Find the LCM of 4, 14 and 7.
20. 20.Three temple bells ring every 30, 5 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
21. 21.The HCF of two numbers is 3 and their LCM is 60. One of the numbers is 12. What is the other number?
22. 22.Three temple bells ring every 6, 15 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
23. 23.Round 88.19 to one decimal place. =
24. 24.How many factors does 65 have?
25. 25.Two tanks hold 120 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
26. 26.Which is closest to 695 + 696 + 497? (a) 2000 (b) 1900 (c) 1800 (d) 2100
27. 27.What percent of 50 is 7?
28. 28.Which is closest to 695 + 796 + 700? (a) 2200 (b) 2300 (c) 2100 (d) 2400
29. 29.Two tanks hold 45 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
30. 30.A hall floor is 200 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
31. 31.If 9 kg of rice costs ₹756, how many kg can you buy for ₹504?
32. 32.What is the smallest number you must take away from 711 so that it divides exactly by 13?
33. 33.Which of these numbers divides exactly by 9? (a) 3721 (b) 6094 (c) 6084 (d) 2693
34. 34.14 ÷ 2 × 2 + 29 =
35. 35.What is 15% of 380?
36. 36.The HCF of two numbers is 5 and their LCM is 60. One of the numbers is 15. What is the other number?
37. 37.10 ÷ 5 × 5 + 8 =
38. 38.7 ÷ 2 =
39. 39.1/2 × 5/12 =
40. 40.Find the LCM of 8, 14 and 12.

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