Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 727 · 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. 1.1/5 of 10 + 2 × 7 =
2. 2.What is the smallest number you must take away from 681 so that it divides exactly by 13?
3. 3.3.6 × 4 =
4. 4.Find the HCF of 6 and 10.
5. 5.1/3 + 4/12 =
6. 6.Divide ₹627 between Arjun and Rohan in the ratio 2 : 9. How much does Rohan get (in ₹)?
7. 7.Which of these numbers divides exactly by 3? (a) 7734 (b) 7231 (c) 7148 (d) 1426
8. 8.How many factors does 14 have?
9. 9.The ratio of boys to girls in a class is 7 : 8. There are 63 boys. How many girls are there?
10. 10.What is the smallest number you must take away from 290 so that it divides exactly by 9?
11. 11.9 painters can paint a school in 26 days. How many days would 6 painters take, working at the same speed?
12. 12.If 9 erasers cost ₹504, how much do 4 erasers cost (in ₹)?
13. 13.Which of these numbers divides exactly by 11? (a) 6600 (b) 5795 (c) 6126 (d) 5425
14. 14.Find the smallest number bigger than 8 that leaves a remainder of 1 when divided by 8, 3 or 6.
15. 15.Rahul takes 60 seconds and Tara takes 40 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?
16. 16.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 6 or 4.
17. 17.Three temple bells ring every 12, 4 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
18. 18.Round 26728 to the nearest thousand.
19. 19.What is the smallest number you must take away from 141 so that it divides exactly by 13?
20. 20.Write 37/50 as a percent.
21. 21.4/5 × 5/6 =
22. 22.The HCF of two numbers is 5 and their LCM is 60. One of the numbers is 15. What is the other number?
23. 23.The HCF of two numbers is 8 and their LCM is 224. One of the numbers is 56. What is the other number?
24. 24.Find the LCM of 14 and 4.
25. 25.A hall floor is 300 cm long and 240 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
26. 26.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 8, 9 or 12.
27. 27.A hall floor is 125 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
28. 28.Find the LCM of 18 and 48.
29. 29.Divide ₹100 between Ishaan and Manav in the ratio 3 : 2. How much does Manav get (in ₹)?
30. 30.Three temple bells ring every 20, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
31. 31.Three temple bells ring every 24, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
32. 32.Which is closest to 197 + 497 + 95? (a) 800 (b) 900 (c) 700 (d) 1000
33. 33.Which is closest to 601 × 30? (Round each number first.) (a) 1800 (b) 180000 (c) 36000 (d) 18000
34. 34.1/2 + 2/5 =
35. 35.If 6 kg of rice costs ₹336, how many kg can you buy for ₹112?
36. 36.What is the smallest number you must add to 484 so that it divides exactly by 8?
37. 37.Nisha scored 35 marks out of 50 in a test. What percentage did Nisha score?
38. 38.If 10 cricket balls cost ₹150, how much do 17 cricket balls cost (in ₹)?
39. 39.7 : 11 = 49 : ?
40. 40.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?

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