Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 657 · 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.Three temple bells ring every 10, 8 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
2. 2.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 4, 6 or 9.
3. 3.Find the HCF of 60 and 48.
4. 4.Two tanks hold 280 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
5. 5.Which is closest to 3500 ÷ 51? (a) 35 (b) 70 (c) 700 (d) 140
6. 6.The HCF of two numbers is 2 and their LCM is 90. One of the numbers is 18. What is the other number?
7. 7.If 9 kg of rice costs ₹360, how many kg can you buy for ₹240?
8. 8.(6 + 2) × 3 − 15 =
9. 9.2 × (25 − 13) + 40 ÷ 4 =
10. 10.Which is closest to 704 × 90? (Round each number first.) (a) 63000 (b) 6300 (c) 126000 (d) 630000
11. 11.How many factors does 60 have?
12. 12.What is the smallest number you must add to 253 so that it divides exactly by 6?
13. 13.Which of these numbers divides exactly by 3? (a) 2480 (b) 2632 (c) 1640 (d) 4440
14. 14.How many factors does 32 have?
15. 15.Divide ₹176 between Dev and Arjun in the ratio 2 : 9. How much does Dev get (in ₹)?
16. 16.A hall floor is 200 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
17. 17.A car goes 240 km on 10 litres of petrol. How far can it go on 30 litres (in km)?
18. 18.21 − 36 ÷ 6 × 2 =
19. 19.If 12 erasers cost ₹96, how much do 7 erasers cost (in ₹)?
20. 20.What is the smallest number you must take away from 458 so that it divides exactly by 8?
21. 21.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
22. 22.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
23. 23.Which is closest to 402 + 802 + 697? (a) 2100 (b) 1800 (c) 1900 (d) 2000
24. 24.2 × (20 − 8) + 72 ÷ 9 =
25. 25.What is 1/3 of 18 km?
26. 26.Meera takes 75 seconds and Arjun 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?
27. 27.Which is closest to 599 × 52? (Round each number first.) (a) 300000 (b) 30000 (c) 60000 (d) 3000
28. 28.Rahul takes 54 seconds and Nisha takes 90 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.A hall floor is 200 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
30. 30.What percent of 50 is 24?
31. 31.Which is closest to 1194 ÷ 19? (a) 120 (b) 600 (c) 60 (d) 30
32. 32.26 − 10 ÷ 2 × 2 =
33. 33.If 3 kg of rice costs ₹144, how many kg can you buy for ₹96?
34. 34.A hall floor is 200 cm long and 175 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
35. 35.3.4 ÷ 2 =
36. 36.2/9 of 45 + 3 × 2 =
37. 37.A car goes 48 km on 4 litres of petrol. How far can it go on 23 litres (in km)?
38. 38.Find the LCM of 4, 14 and 12.
39. 39.A hostel has enough food for 11 students for 28 days. How many days will the same food last for 22 students?
40. 40.What is 12% of 375?

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