Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 17 · 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.What is the smallest number you must add to 299 so that it divides exactly by 11?
2. 2.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
3. 3.40% of a number is 108. What is the number?
4. 4.If 5 kg of rice costs ₹160, how many kg can you buy for ₹96?
5. 5.What is the smallest number you must take away from 604 so that it divides exactly by 6?
6. 6.26 + 7 × 3 − 17 =
7. 7.What is 1/2 of ₹42?
8. 8.Two tanks hold 70 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
9. 9.Divide ₹900 between Rohan and Nisha in the ratio 7 : 8. How much does Nisha get (in ₹)?
10. 10.29.4 ÷ 3 =
11. 11.The ratio of boys to girls in a class is 5 : 2. There are 10 boys. How many girls are there?
12. 12.Three temple bells ring every 6, 12 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
13. 13.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 5 or 8.
14. 14.What is 1/9 of 126 km?
15. 15.6.2 × 3 =
16. 16.A hall floor is 210 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
17. 17.A car goes 126 km on 7 litres of petrol. How far can it go on 2 litres (in km)?
18. 18.Divide ₹583 between Kabir and Arjun in the ratio 5 : 6. How much does Arjun get (in ₹)?
19. 19.6 : 13 = 54 : ?
20. 20.Divide ₹36 between Rahul and Meera in the ratio 2 : 1. How much does Rahul get (in ₹)?
21. 21.The HCF of two numbers is 5 and their LCM is 30. One of the numbers is 10. What is the other number?
22. 22.Divide ₹264 between Aarav and Manav in the ratio 5 : 1. How much does Manav get (in ₹)?
23. 23.Find the LCM of 5, 4 and 6.
24. 24.2 × (16 − 7) + 18 ÷ 6 =
25. 25.Find the smallest number bigger than 5 that leaves a remainder of 1 when divided by 5, 3 or 4.
26. 26.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
27. 27.If 2 kg of rice costs ₹40, how many kg can you buy for ₹120?
28. 28.Farhan takes 60 seconds and Ishaan 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?
29. 29.26 + 5 × 10 − 18 =
30. 30.Which of these numbers divides exactly by 11? (a) 6416 (b) 3369 (c) 1573 (d) 7125
31. 31.What is the smallest number you must take away from 889 so that it divides exactly by 11?
32. 32.25% of a number is 23. What is the number?
33. 33.Divide ₹297 between Farhan and Isha in the ratio 8 : 1. How much does Farhan get (in ₹)?
34. 34.The HCF of two numbers is 2 and their LCM is 126. One of the numbers is 14. What is the other number?
35. 35.2.1 × 2 =
36. 36.Two tanks hold 225 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
37. 37.7 painters can paint a school in 6 days. How many days would 21 painters take, working at the same speed?
38. 38.A car goes 119 km on 7 litres of petrol. How far can it go on 6 litres (in km)?
39. 39.Round 18.38 to one decimal place. =
40. 40.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 3, 9 or 15.

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