Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 862 · 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.Find the HCF of 28 and 24.
2. 2.The HCF of two numbers is 7 and their LCM is 126. One of the numbers is 14. What is the other number?
3. 3.What percent of 500 is 435?
4. 4.A car goes 150 km on 10 litres of petrol. How far can it go on 25 litres (in km)?
5. 5.A hall floor is 90 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
6. 6.What is 4/5 of 40 km?
7. 7.Which is closest to 996 ÷ 51? (a) 200 (b) 40 (c) 20 (d) 10
8. 8.Round 42.74 to one decimal place. =
9. 9.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 4, 12 or 6.
10. 10.2/9 × 3/8 =
11. 11.What is the smallest number you must add to 860 so that it divides exactly by 9?
12. 12.Three temple bells ring every 18, 6 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
13. 13.Two tanks hold 280 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
14. 14.Find the LCM of 16 and 12.
15. 15.Find the smallest number bigger than 5 that leaves a remainder of 1 when divided by 4, 3 or 5.
16. 16.A car goes 102 km on 6 litres of petrol. How far can it go on 38 litres (in km)?
17. 17.Divide ₹420 between Isha and Diya in the ratio 5 : 7. How much does Diya get (in ₹)?
18. 18.The HCF of two numbers is 3 and their LCM is 189. One of the numbers is 21. What is the other number?
19. 19.Divide ₹540 between Vivaan and Rahul in the ratio 8 : 1. How much does Vivaan get (in ₹)?
20. 20.Arjun takes 45 seconds and Tara takes 75 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?
21. 21.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?
22. 22.7.4 × 8 =
23. 23.What is 50% of 470?
24. 24.What is the smallest number you must add to 475 so that it divides exactly by 3?
25. 25.Which is closest to 1006 ÷ 49? (a) 20 (b) 40 (c) 10 (d) 200
26. 26.The ratio of boys to girls in a class is 2 : 5. There are 12 boys. How many girls are there?
27. 27.Three temple bells ring every 15, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
28. 28.Farhan takes 60 seconds and Zoya takes 72 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?
29. 29.Zoya takes 45 seconds and Kavya 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?
30. 30.Write 3/5 as a percent.
31. 31.Round 30.39 to one decimal place. =
32. 32.What is the smallest number you must take away from 857 so that it divides exactly by 3?
33. 33.Which is closest to 1995 ÷ 49? (a) 80 (b) 400 (c) 20 (d) 40
34. 34.Which is closest to 203 × 51? (Round each number first.) (a) 100000 (b) 10000 (c) 1000 (d) 20000
35. 35.28 + 8 × 10 − 16 =
36. 36.80 − 45 ÷ 5 × 8 =
37. 37.Find the HCF of 28 and 16.
38. 38.Which of these numbers divides exactly by 6? (a) 1839 (b) 9439 (c) 1044 (d) 8061
39. 39.What is the smallest number you must take away from 957 so that it divides exactly by 7?
40. 40.Which is closest to 304 + 503 + 698? (a) 1400 (b) 1500 (c) 1600 (d) 1700

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