Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 859 · 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.If 3 pencil boxes cost ₹87, how much do 18 pencil boxes cost (in ₹)?
2. 2.Vivaan takes 40 seconds and Aarav 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?
3. 3.Find the LCM of 30 and 48.
4. 4.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 16. What is the other number?
5. 5.Which of these numbers divides exactly by 3? (a) 6062 (b) 3910 (c) 4394 (d) 6657
6. 6.(6 + 14) × 2 − 6 =
7. 7.16.5 ÷ 5 =
8. 8.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
9. 9.Which is closest to 695 + 397 + 102? (a) 1200 (b) 1400 (c) 1100 (d) 1300
10. 10.What percent of 25 is 3?
11. 11.A car goes 120 km on 12 litres of petrol. How far can it go on 17 litres (in km)?
12. 12.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 9. What is the other number?
13. 13.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 3 or 5.
14. 14.What is the smallest number you must take away from 260 so that it divides exactly by 7?
15. 15.What is 1/2 of 4 students?
16. 16.The ratio of boys to girls in a class is 8 : 1. There are 56 boys. How many girls are there?
17. 17.A car goes 160 km on 8 litres of petrol. How far can it go on 36 litres (in km)?
18. 18.If 2 pencil boxes cost ₹34, how much do 3 pencil boxes cost (in ₹)?
19. 19.Three temple bells ring every 4, 15 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
20. 20.37.1 ÷ 7 =
21. 21.Find the LCM of 15, 2 and 4.
22. 22.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
23. 23.If 9 kg of rice costs ₹639, how many kg can you buy for ₹355?
24. 24.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
25. 25.What is the smallest number you must add to 239 so that it divides exactly by 6?
26. 26.Which is closest to 702 × 42? (Round each number first.) (a) 280000 (b) 2800 (c) 56000 (d) 28000
27. 27.What percent of 80 is 52?
28. 28.A hostel has enough food for 7 students for 6 days. How many days will the same food last for 14 students?
29. 29.What is the smallest number you must add to 289 so that it divides exactly by 11?
30. 30.46 + 4 × 10 − 34 =
31. 31.A hall floor is 360 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
32. 32.Three temple bells ring every 15, 10 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
33. 33.A car goes 33 km on 3 litres of petrol. How far can it go on 35 litres (in km)?
34. 34.Which is closest to 4497 ÷ 51? (a) 900 (b) 45 (c) 90 (d) 180
35. 35.72 ÷ 9 × 5 + 10 =
36. 36.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 36. What is the other number?
37. 37.A car goes 180 km on 12 litres of petrol. How far can it go on 36 litres (in km)?
38. 38.Find the HCF of 14 and 21.
39. 39.8 painters can paint a school in 5 days. How many days would 5 painters take, working at the same speed?
40. 40.Tara scored 8 marks out of 80 in a test. What percentage did Tara score?

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