Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 787 · 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.A hostel has enough food for 10 students for 6 days. How many days will the same food last for 2 students?
2. 2.Which of these numbers divides exactly by 4? (a) 3194 (b) 3490 (c) 6941 (d) 2160
3. 3.A hostel has enough food for 12 students for 28 days. How many days will the same food last for 16 students?
4. 4.Three temple bells ring every 18, 5 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
5. 5.Zoya scored 10 marks out of 20 in a test. What percentage did Zoya score?
6. 6.A car goes 30 km on 3 litres of petrol. How far can it go on 23 litres (in km)?
7. 7.Find the LCM of 12, 5 and 6.
8. 8.Divide ₹282 between Nisha and Zoya in the ratio 5 : 1. How much does Nisha get (in ₹)?
9. 9.Find the LCM of 15 and 20.
10. 10.Which is closest to 1002 ÷ 21? (a) 25 (b) 100 (c) 50 (d) 500
11. 11.What is 12% of 100?
12. 12.Which is closest to 798 ÷ 19? (a) 400 (b) 80 (c) 40 (d) 20
13. 13.The HCF of two numbers is 3 and their LCM is 60. One of the numbers is 12. What is the other number?
14. 14.Divide ₹286 between Ishaan and Ananya in the ratio 2 : 9. How much does Ananya get (in ₹)?
15. 15.5 × (20 − 6) + 72 ÷ 8 =
16. 16.Which is closest to 591 ÷ 19? (a) 30 (b) 15 (c) 60 (d) 300
17. 17.A car goes 216 km on 12 litres of petrol. How far can it go on 6 litres (in km)?
18. 18.What is the smallest number you must take away from 521 so that it divides exactly by 13?
19. 19.Ishaan scored 30 marks out of 40 in a test. What percentage did Ishaan score?
20. 20.Two tanks hold 60 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
21. 21.What percent of 50 is 7?
22. 22.Saanvi scored 4 marks out of 25 in a test. What percentage did Saanvi score?
23. 23.What is 2/9 of 144 km?
24. 24.If 3 kg of rice costs ₹165, how many kg can you buy for ₹275?
25. 25.Ishaan takes 40 seconds and Manav takes 48 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. 26.20.7 ÷ 9 =
27. 27.15 − 12 ÷ 4 × 2 =
28. 28.12 : 9 = 72 : ?
29. 29.40 + 8 × 12 − 7 =
30. 30.Round 47390 to the nearest hundred.
31. 31.Two tanks hold 315 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
32. 32.A hall floor is 150 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
33. 33.Dev takes 45 seconds and Isha takes 36 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?
34. 34.What is the smallest number you must add to 738 so that it divides exactly by 12?
35. 35.10 : 11 = 80 : ?
36. 36.Round 90.31 to one decimal place. =
37. 37.Two tanks hold 350 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
38. 38.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
39. 39.Find the smallest number bigger than 10 that leaves a remainder of 3 when divided by 10, 8 or 5.
40. 40.Find the HCF of 64 and 40.

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