Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 615 · 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.The ratio of boys to girls in a class is 5 : 8. There are 35 boys. How many girls are there?
2. 2.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 5, 9 or 15.
3. 3.Find the HCF of 35 and 10.
4. 4.Two tanks hold 405 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
5. 5.What is 12% of 150?
6. 6.3 painters can paint a school in 4 days. How many days would 2 painters take, working at the same speed?
7. 7.If 7 kg of rice costs ₹448, how many kg can you buy for ₹896?
8. 8.Find the LCM of 2, 14 and 13.
9. 9.Isha scored 9 marks out of 25 in a test. What percentage did Isha score?
10. 10.Three temple bells ring every 5, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
11. 11.The ratio of boys to girls in a class is 1 : 8. There are 5 boys. How many girls are there?
12. 12.Divide ₹252 between Aditya and Ananya in the ratio 1 : 5. How much does Aditya get (in ₹)?
13. 13.Find the HCF of 96 and 84.
14. 14.How many factors does 53 have?
15. 15.How many factors does 85 have?
16. 16.40 + 11 × 4 − 13 =
17. 17.Which of these numbers divides exactly by 8? (a) 6141 (b) 9339 (c) 4280 (d) 9210
18. 18.Arjun takes 30 seconds and Priya takes 48 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. 19.150% of a number is 285. What is the number?
20. 20.The HCF of two numbers is 9 and their LCM is 135. One of the numbers is 27. What is the other number?
21. 21.Kavya takes 45 seconds and Arjun 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?
22. 22.What is 150% of 600?
23. 23.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
24. 24.Two tanks hold 240 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
25. 25.Three temple bells ring every 8, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
26. 26.Find the LCM of 2 and 9.
27. 27.A hostel has enough food for 4 students for 4 days. How many days will the same food last for 8 students?
28. 28.Round 50.81 to one decimal place. =
29. 29.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 12. What is the other number?
30. 30.38.8 ÷ 4 =
31. 31.What is 5/6 of ₹138?
32. 32.A car goes 16 km on 2 litres of petrol. How far can it go on 37 litres (in km)?
33. 33.Write 1/2 as a percent.
34. 34.The HCF of two numbers is 2 and their LCM is 126. One of the numbers is 18. What is the other number?
35. 35.A hall floor is 140 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
36. 36.Find the LCM of 8, 10 and 2.
37. 37.The HCF of two numbers is 3 and their LCM is 42. One of the numbers is 6. What is the other number?
38. 38.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
39. 39.19 + 11 × 8 − 10 =
40. 40.24 ÷ 4 × 5 + 9 =

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