Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 713 · 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 take away from 342 so that it divides exactly by 7?
2. 2.1/5 + 7/11 =
3. 3.Find the LCM of 5, 3 and 14.
4. 4.8/10 + 9/11 =
5. 5.33 ÷ 5 =
6. 6.The HCF of two numbers is 5 and their LCM is 90. One of the numbers is 45. What is the other number?
7. 7.The HCF of two numbers is 9 and their LCM is 504. One of the numbers is 72. What is the other number?
8. 8.Find the LCM of 11, 3 and 2.
9. 9.What is 9/10 of ₹90?
10. 10.Aditya scored 64 marks out of 80 in a test. What percentage did Aditya score?
11. 11.What is 1/2 of 20 students?
12. 12.The HCF of two numbers is 3 and their LCM is 216. One of the numbers is 27. What is the other number?
13. 13.8 : 3 = 56 : ?
14. 14.If 7 kg of rice costs ₹441, how many kg can you buy for ₹126?
15. 15.A car goes 33 km on 3 litres of petrol. How far can it go on 8 litres (in km)?
16. 16.The ratio of boys to girls in a class is 7 : 2. There are 14 boys. How many girls are there?
17. 17.Which is closest to 605 + 102 + 203? (a) 1000 (b) 900 (c) 800 (d) 1100
18. 18.Rahul takes 30 seconds and Diya takes 80 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?
19. 19.What percent of 80 is 76?
20. 20.Three temple bells ring every 6, 30 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
21. 21.Find the HCF of 21 and 28.
22. 22.Which is closest to 600 × 41? (Round each number first.) (a) 2400 (b) 240000 (c) 24000 (d) 48000
23. 23.If 2 erasers cost ₹92, how much do 18 erasers cost (in ₹)?
24. 24.Find the HCF of 42 and 56.
25. 25.Which of these numbers divides exactly by 11? (a) 2978 (b) 7210 (c) 2880 (d) 1276
26. 26.Ananya takes 45 seconds and Ishaan takes 60 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. 27.1.09 + 4.3 =
28. 28.Three temple bells ring every 4, 6 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
29. 29.How many factors does 82 have?
30. 30.Write 7/10 as a percent.
31. 31.7 × (23 − 1) + 24 ÷ 6 =
32. 32.What is the smallest number you must add to 890 so that it divides exactly by 3?
33. 33.Which is closest to 300 + 100 + 403? (a) 700 (b) 900 (c) 800 (d) 1000
34. 34.Which is closest to 603 × 78? (Round each number first.) (a) 48000 (b) 96000 (c) 4800 (d) 480000
35. 35.Which is closest to 408 ÷ 21? (a) 200 (b) 20 (c) 10 (d) 40
36. 36.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?
37. 37.Three temple bells ring every 6, 30 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
38. 38.Divide ₹209 between Tara and Diya in the ratio 2 : 9. How much does Tara get (in ₹)?
39. 39.Ananya takes 80 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?
40. 40.If 9 kg of rice costs ₹288, how many kg can you buy for ₹160?

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