Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 491 · 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.A hall floor is 175 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
2. 2.Two tanks hold 105 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
3. 3.The ratio of boys to girls in a class is 1 : 7. There are 3 boys. How many girls are there?
4. 4.Kabir scored 16 marks out of 40 in a test. What percentage did Kabir score?
5. 5.If 10 notebooks cost ₹410, how much do 3 notebooks cost (in ₹)?
6. 6.Three temple bells ring every 5, 24 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
7. 7.What is the smallest number you must take away from 868 so that it divides exactly by 3?
8. 8.Find the LCM of 3, 8 and 7.
9. 9.9/10 + 2/3 =
10. 10.Which is closest to 595 + 105 + 595? (a) 1300 (b) 1500 (c) 1400 (d) 1200
11. 11.Which is closest to 295 + 402 + 297? (a) 900 (b) 1200 (c) 1100 (d) 1000
12. 12.A hall floor is 280 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
13. 13.What percent of 25 is 21?
14. 14.(6 + 15) × 5 − 30 =
15. 15.The HCF of two numbers is 9 and their LCM is 324. One of the numbers is 36. What is the other number?
16. 16.Which of these numbers divides exactly by 9? (a) 6592 (b) 4564 (c) 8928 (d) 3522
17. 17.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
18. 18.Two tanks hold 200 litres and 450 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
19. 19.Which is closest to 896 + 796 + 705? (a) 2400 (b) 2300 (c) 2600 (d) 2500
20. 20.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
21. 21.What is the smallest number you must add to 879 so that it divides exactly by 4?
22. 22.What is 4/7 of 98 km?
23. 23.Find the HCF of 91 and 104.
24. 24.Find the HCF of 56 and 98.
25. 25.Round 1039 to the nearest hundred.
26. 26.Rohan takes 54 seconds and Aarav takes 30 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?
27. 27.Write 1/4 as a percent.
28. 28.Round 7851 to the nearest hundred.
29. 29.Three temple bells ring every 15, 8 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
30. 30.The ratio of boys to girls in a class is 1 : 4. There are 9 boys. How many girls are there?
31. 31.The HCF of two numbers is 7 and their LCM is 126. One of the numbers is 14. What is the other number?
32. 32.The ratio of boys to girls in a class is 4 : 1. There are 36 boys. How many girls are there?
33. 33.What is 75% of 4?
34. 34.Two tanks hold 15 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
35. 35.39 + 6 × 8 − 2 =
36. 36.Three temple bells ring every 30, 18 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
37. 37.43 + 11 × 7 − 11 =
38. 38.Round 25296 to the nearest thousand.
39. 39.Find the HCF of 24 and 40.
40. 40.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).

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