Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 108 · 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 307 so that it divides exactly by 4?
2. 2.If 11 mangoes cost ₹88, how much do 6 mangoes cost (in ₹)?
3. 3.Three temple bells ring every 6, 5 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
4. 4.What is the smallest number you must add to 163 so that it divides exactly by 8?
5. 5.The ratio of boys to girls in a class is 5 : 9. There are 50 boys. How many girls are there?
6. 6.Rahul takes 40 seconds and Saanvi 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?
7. 7.Saanvi scored 22 marks out of 25 in a test. What percentage did Saanvi score?
8. 8.Rohan scored 3 marks out of 20 in a test. What percentage did Rohan score?
9. 9.Which of these numbers divides exactly by 9? (a) 6491 (b) 9726 (c) 8678 (d) 4437
10. 10.What is 5% of 40?
11. 11.Which is closest to 398 × 79? (Round each number first.) (a) 32000 (b) 64000 (c) 320000 (d) 3200
12. 12.11 painters can paint a school in 12 days. How many days would 3 painters take, working at the same speed?
13. 13.2 painters can paint a school in 28 days. How many days would 14 painters take, working at the same speed?
14. 14.Which is closest to 799 × 29? (Round each number first.) (a) 24000 (b) 2400 (c) 240000 (d) 48000
15. 15.Three temple bells ring every 4, 12 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
16. 16.Which is closest to 896 × 58? (Round each number first.) (a) 54000 (b) 540000 (c) 108000 (d) 5400
17. 17.Which is closest to 703 × 39? (Round each number first.) (a) 56000 (b) 280000 (c) 2800 (d) 28000
18. 18.If 2 kg of rice costs ₹116, how many kg can you buy for ₹696?
19. 19.Which of these numbers divides exactly by 9? (a) 6789 (b) 6727 (c) 2736 (d) 5552
20. 20.8 × (14 − 8) + 28 ÷ 7 =
21. 21.Find the HCF of 25 and 10.
22. 22.2/3 − 3/8 =
23. 23.Divide ₹143 between Aditya and Nisha in the ratio 7 : 4. How much does Aditya get (in ₹)?
24. 24.6 : 15 = 54 : ?
25. 25.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
26. 26.What is 20% of 365?
27. 27.A hostel has enough food for 9 students for 12 days. How many days will the same food last for 6 students?
28. 28.A hostel has enough food for 10 students for 24 days. How many days will the same food last for 15 students?
29. 29.If 10 kites cost ₹310, how much do 6 kites cost (in ₹)?
30. 30.The ratio of boys to girls in a class is 5 : 3. There are 35 boys. How many girls are there?
31. 31.2/6 − 1/7 =
32. 32.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
33. 33.A car goes 126 km on 7 litres of petrol. How far can it go on 21 litres (in km)?
34. 34.43 + 5 × 5 − 41 =
35. 35.8.4 × 3 =
36. 36.Three temple bells ring every 4, 9 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
37. 37.27 − 15 ÷ 3 × 2 =
38. 38.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
39. 39.Which is closest to 901 × 31? (Round each number first.) (a) 54000 (b) 270000 (c) 27000 (d) 2700
40. 40.Divide ₹513 between Aarav and Diya in the ratio 4 : 5. How much does Aarav get (in ₹)?

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