Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 776 · 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.A hall floor is 100 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
2. 2.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
3. 3.54.4 ÷ 8 =
4. 4.4/5 × 4/10 =
5. 5.70 ÷ 7 × 4 + 7 =
6. 6.Divide ₹77 between Rohan and Tara in the ratio 8 : 3. How much does Rohan get (in ₹)?
7. 7.Round 29.14 to one decimal place. =
8. 8.What is the smallest number you must take away from 611 so that it divides exactly by 12?
9. 9.Meera takes 60 seconds and Farhan 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?
10. 10.7 painters can paint a school in 10 days. How many days would 10 painters take, working at the same speed?
11. 11.Three temple bells ring every 8, 10 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
12. 12.What is 1/5 of 145 litres?
13. 13.Divide ₹273 between Aarav and Nisha in the ratio 7 : 6. How much does Nisha get (in ₹)?
14. 14.A car goes 153 km on 9 litres of petrol. How far can it go on 14 litres (in km)?
15. 15.Three temple bells ring every 9, 10 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
16. 16.The ratio of boys to girls in a class is 1 : 6. There are 6 boys. How many girls are there?
17. 17.Round 39.24 to one decimal place. =
18. 18.Round 93247 to the nearest hundred.
19. 19.Three temple bells ring every 6, 24 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
20. 20.A hall floor is 300 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
21. 21.What is the smallest number you must add to 134 so that it divides exactly by 8?
22. 22.Round 27.26 to one decimal place. =
23. 23.1/6 + 5/8 =
24. 24.What is the smallest number you must take away from 505 so that it divides exactly by 11?
25. 25.A hostel has enough food for 5 students for 24 days. How many days will the same food last for 4 students?
26. 26.60 − 6 ÷ 2 × 8 =
27. 27.3.29 + 6.2 =
28. 28.Find the LCM of 3, 11 and 15.
29. 29.A hall floor is 350 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
30. 30.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?
31. 31.Find the HCF of 126 and 98.
32. 32.If 9 kg of rice costs ₹189, how many kg can you buy for ₹252?
33. 33.Find the LCM of 6, 5 and 12.
34. 34.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
35. 35.The HCF of two numbers is 8 and their LCM is 168. One of the numbers is 56. What is the other number?
36. 36.What is the smallest number you must add to 577 so that it divides exactly by 12?
37. 37.5/12 × 3/4 =
38. 38.How many factors does 98 have?
39. 39.Three temple bells ring every 5, 9 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
40. 40.120% of a number is 204. What is the number?

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