Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 118 · 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 11 notebooks cost ₹616, how much do 17 notebooks cost (in ₹)?
2. 2.8.9 × 9 =
3. 3.Saanvi takes 50 seconds and Rahul 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?
4. 4.Three temple bells ring every 20, 8 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
5. 5.46 + 9 × 5 − 5 =
6. 6.Which is closest to 504 + 297 + 205? (a) 1100 (b) 900 (c) 1200 (d) 1000
7. 7.Which is closest to 403 + 199 + 298? (a) 1000 (b) 800 (c) 1100 (d) 900
8. 8.2.76 + 9.9 =
9. 9.36 − 32 ÷ 4 × 2 =
10. 10.Write 1/2 as a percent.
11. 11.Three temple bells ring every 24, 5 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
12. 12.What is the smallest number you must take away from 950 so that it divides exactly by 4?
13. 13.Find the HCF of 56 and 49.
14. 14.12 painters can paint a school in 4 days. How many days would 3 painters take, working at the same speed?
15. 15.A hall floor is 350 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
16. 16.Three temple bells ring every 15, 30 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
17. 17.The HCF of two numbers is 6 and their LCM is 60. One of the numbers is 12. What is the other number?
18. 18.Three temple bells ring every 10, 20 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
19. 19.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
20. 20.What is the smallest number you must add to 627 so that it divides exactly by 8?
21. 21.Find the LCM of 8 and 12.
22. 22.Which is closest to 2801 ÷ 39? (a) 140 (b) 70 (c) 700 (d) 35
23. 23.Round 66731 to the nearest thousand.
24. 24.If 2 kg of rice costs ₹100, how many kg can you buy for ₹300?
25. 25.Find the HCF of 32 and 24.
26. 26.Find the LCM of 5 and 3.
27. 27.44 − 27 ÷ 3 × 3 =
28. 28.Which of these numbers divides exactly by 3? (a) 2677 (b) 6607 (c) 8563 (d) 9834
29. 29.The ratio of boys to girls in a class is 7 : 2. There are 63 boys. How many girls are there?
30. 30.A car goes 22 km on 2 litres of petrol. How far can it go on 14 litres (in km)?
31. 31.Divide ₹385 between Aditya and Meera in the ratio 3 : 8. How much does Meera get (in ₹)?
32. 32.1/3 of 15 + 6 × 7 =
33. 33.The ratio of boys to girls in a class is 5 : 1. There are 35 boys. How many girls are there?
34. 34.Write 1/10 as a percent.
35. 35.What is the smallest number you must take away from 610 so that it divides exactly by 3?
36. 36.Which is closest to 596 × 31? (Round each number first.) (a) 1800 (b) 36000 (c) 180000 (d) 18000
37. 37.Find the LCM of 6 and 15.
38. 38.The HCF of two numbers is 2 and their LCM is 12. One of the numbers is 6. What is the other number?
39. 39.11 painters can paint a school in 28 days. How many days would 7 painters take, working at the same speed?
40. 40.A hall floor is 240 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

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