Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 947 · 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.Two tanks hold 75 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
2. 2.1/2 × 1/4 =
3. 3.Three temple bells ring every 24, 8 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
4. 4.Farhan scored 42 marks out of 50 in a test. What percentage did Farhan score?
5. 5.What is 12% of 400?
6. 6.Write 1/4 as a percent.
7. 7.Round 44.49 to one decimal place. =
8. 8.Three temple bells ring every 12, 5 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
9. 9.Two tanks hold 400 litres and 350 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
10. 10.Three temple bells ring every 30, 12 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
11. 11.Round 9420 to the nearest thousand.
12. 12.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
13. 13.Which of these numbers divides exactly by 4? (a) 8191 (b) 9000 (c) 5153 (d) 1222
14. 14.What percent of 250 is 25?
15. 15.30% of a number is 12. What is the number?
16. 16.Three temple bells ring every 9, 24 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
17. 17.Meera takes 80 seconds and Pooja 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?
18. 18.(10 + 4) × 7 − 3 =
19. 19.9/11 − 6/10 =
20. 20.A hostel has enough food for 7 students for 21 days. How many days will the same food last for 21 students?
21. 21.16 ÷ 4 × 7 + 18 =
22. 22.If 3 pencil boxes cost ₹117, how much do 20 pencil boxes cost (in ₹)?
23. 23.The ratio of boys to girls in a class is 4 : 3. There are 28 boys. How many girls are there?
24. 24.38 − 36 ÷ 6 × 2 =
25. 25.The ratio of boys to girls in a class is 3 : 7. There are 15 boys. How many girls are there?
26. 26.Which is closest to 400 × 29? (Round each number first.) (a) 1200 (b) 24000 (c) 120000 (d) 12000
27. 27.If 2 kg of rice costs ₹148, how many kg can you buy for ₹1036?
28. 28.What is the smallest number you must add to 631 so that it divides exactly by 13?
29. 29.5% of a number is 21. What is the number?
30. 30.Which of these numbers divides exactly by 11? (a) 1243 (b) 6033 (c) 2793 (d) 2194
31. 31.What is the smallest number you must take away from 793 so that it divides exactly by 9?
32. 32.If 2 kg of rice costs ₹164, how many kg can you buy for ₹328?
33. 33.Find the LCM of 20 and 36.
34. 34.Which is closest to 198 × 68? (Round each number first.) (a) 28000 (b) 1400 (c) 14000 (d) 140000
35. 35.A hostel has enough food for 9 students for 9 days. How many days will the same food last for 3 students?
36. 36.What is the smallest number you must add to 304 so that it divides exactly by 11?
37. 37.20 ÷ 5 × 2 + 6 =
38. 38.What is 12% of 150?
39. 39.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
40. 40.The ratio of boys to girls in a class is 1 : 5. There are 10 boys. How many girls are there?

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