Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 489 · 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 270 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
2. 2.Write 1/10 as a percent.
3. 3.What is 15% of 180?
4. 4.What is the smallest number you must add to 407 so that it divides exactly by 4?
5. 5.Which is closest to 1592 ÷ 19? (a) 80 (b) 160 (c) 40 (d) 800
6. 6.If 6 kg of rice costs ₹324, how many kg can you buy for ₹108?
7. 7.Three temple bells ring every 4, 9 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
8. 8.Which is closest to 503 × 22? (Round each number first.) (a) 1000 (b) 20000 (c) 100000 (d) 10000
9. 9.25.2 ÷ 7 =
10. 10.Divide ₹208 between Priya and Dev in the ratio 3 : 5. How much does Dev get (in ₹)?
11. 11.Three temple bells ring every 9, 18 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
12. 12.A car goes 264 km on 12 litres of petrol. How far can it go on 18 litres (in km)?
13. 13.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
14. 14.Which of these numbers divides exactly by 8? (a) 6288 (b) 9071 (c) 2683 (d) 5917
15. 15.What is the smallest number you must add to 563 so that it divides exactly by 13?
16. 16.Three temple bells ring every 18, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
17. 17.Find the LCM of 5, 3 and 12.
18. 18.Round 7584 to the nearest ten.
19. 19.60% of a number is 162. What is the number?
20. 20.Find the HCF of 16 and 24.
21. 21.The ratio of boys to girls in a class is 1 : 4. There are 10 boys. How many girls are there?
22. 22.9 painters can paint a school in 8 days. How many days would 4 painters take, working at the same speed?
23. 23.2.09 + 6.6 =
24. 24.Divide ₹112 between Tara and Vivaan in the ratio 6 : 1. How much does Vivaan get (in ₹)?
25. 25.What is 5/6 of 42 km?
26. 26.If 6 cricket balls cost ₹216, how much do 7 cricket balls cost (in ₹)?
27. 27.Which of these numbers divides exactly by 3? (a) 8162 (b) 5068 (c) 9425 (d) 5796
28. 28.What is 80% of 355?
29. 29.What is the smallest number you must add to 687 so that it divides exactly by 8?
30. 30.Diya takes 90 seconds and Nisha 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?
31. 31.6 : 7 = 12 : ?
32. 32.The HCF of two numbers is 8 and their LCM is 224. One of the numbers is 32. What is the other number?
33. 33.41 + 10 × 4 − 33 =
34. 34.Two tanks hold 300 litres and 250 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
35. 35.If 2 mangoes cost ₹102, how much do 13 mangoes cost (in ₹)?
36. 36.What percent of 80 is 48?
37. 37.Manav takes 48 seconds and Farhan 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?
38. 38.Find the HCF of 20 and 15.
39. 39.What is the smallest number you must take away from 540 so that it divides exactly by 8?
40. 40.What is the smallest number you must take away from 885 so that it divides exactly by 12?

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