Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 877 · 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.Farhan takes 36 seconds and Diya 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?
2. 2.The HCF of two numbers is 5 and their LCM is 30. One of the numbers is 15. What is the other number?
3. 3.If 7 pens cost ₹105, how much do 5 pens cost (in ₹)?
4. 4.The HCF of two numbers is 2 and their LCM is 80. One of the numbers is 10. What is the other number?
5. 5.What is 1/5 of 55 litres?
6. 6.67 − 21 ÷ 3 × 6 =
7. 7.What is the smallest number you must take away from 704 so that it divides exactly by 12?
8. 8.Round 11.66 to one decimal place. =
9. 9.19 + 2 × 4 − 14 =
10. 10.Three temple bells ring every 12, 4 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
11. 11.What percent of 500 is 300?
12. 12.72 ÷ 8 × 2 + 20 =
13. 13.Write 1/4 as a percent.
14. 14.Find the LCM of 15, 3 and 13.
15. 15.3/6 + 1/2 =
16. 16.Divide ₹649 between Arjun and Aarav in the ratio 3 : 8. How much does Arjun get (in ₹)?
17. 17.The ratio of boys to girls in a class is 4 : 9. There are 12 boys. How many girls are there?
18. 18.Which is closest to 1796 ÷ 19? (a) 45 (b) 90 (c) 180 (d) 900
19. 19.If 5 cricket balls cost ₹185, how much do 4 cricket balls cost (in ₹)?
20. 20.3.5 × 6 =
21. 21.Three temple bells ring every 6, 15 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
22. 22.Round 74818 to the nearest ten.
23. 23.150% of a number is 225. What is the number?
24. 24.The HCF of two numbers is 5 and their LCM is 90. One of the numbers is 10. What is the other number?
25. 25.Priya takes 30 seconds and Sneha takes 50 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?
26. 26.What is the smallest number you must add to 519 so that it divides exactly by 8?
27. 27.Round 65.22 to one decimal place. =
28. 28.Divide ₹144 between Farhan and Aarav in the ratio 1 : 7. How much does Aarav get (in ₹)?
29. 29.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
30. 30.The ratio of boys to girls in a class is 2 : 7. There are 10 boys. How many girls are there?
31. 31.Find the LCM of 8 and 9.
32. 32.Which is closest to 601 × 38? (Round each number first.) (a) 24000 (b) 48000 (c) 2400 (d) 240000
33. 33.How many factors does 88 have?
34. 34.A hall floor is 80 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
35. 35.Three temple bells ring every 20, 24 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
36. 36.Three temple bells ring every 24, 12 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
37. 37.What is the smallest number you must add to 131 so that it divides exactly by 4?
38. 38.10 : 2 = 60 : ?
39. 39.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 6, 15 or 4.
40. 40.The HCF of two numbers is 5 and their LCM is 315. One of the numbers is 35. What is the other number?

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