Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 389 · 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.Find the smallest number bigger than 6 that leaves a remainder of 2 when divided by 3, 5 or 6.
2. 2.Two tanks hold 75 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
3. 3.How many factors does 33 have?
4. 4.Three temple bells ring every 5, 4 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
5. 5.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
6. 6.Divide ₹290 between Nisha and Aditya in the ratio 7 : 3. How much does Nisha get (in ₹)?
7. 7.How many factors does 89 have?
8. 8.Two tanks hold 40 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
9. 9.Vivaan takes 45 seconds and Pooja 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?
10. 10.If 10 pencil boxes cost ₹550, how much do 15 pencil boxes cost (in ₹)?
11. 11.Farhan takes 40 seconds and Kavya takes 45 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?
12. 12.What percent of 200 is 42?
13. 13.What is the smallest number you must add to 143 so that it divides exactly by 8?
14. 14.Which of these numbers divides exactly by 4? (a) 1315 (b) 3964 (c) 3270 (d) 2479
15. 15.A car goes 80 km on 5 litres of petrol. How far can it go on 35 litres (in km)?
16. 16.What is 75% of 176?
17. 17.What percent of 200 is 102?
18. 18.1/6 − 1/8 =
19. 19.How many factors does 70 have?
20. 20.50 ÷ 5 × 5 + 30 =
21. 21.6 × (22 − 21) + 54 ÷ 9 =
22. 22.Karan scored 5 marks out of 25 in a test. What percentage did Karan score?
23. 23.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 6, 3 or 4.
24. 24.The ratio of boys to girls in a class is 9 : 2. There are 72 boys. How many girls are there?
25. 25.A hall floor is 140 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
26. 26.5 : 2 = 10 : ?
27. 27.Which is closest to 303 × 48? (Round each number first.) (a) 150000 (b) 30000 (c) 15000 (d) 1500
28. 28.A car goes 95 km on 5 litres of petrol. How far can it go on 30 litres (in km)?
29. 29.If 7 kg of rice costs ₹420, how many kg can you buy for ₹600?
30. 30.4/5 − 2/3 =
31. 31.A car goes 210 km on 10 litres of petrol. How far can it go on 30 litres (in km)?
32. 32.If 7 kites cost ₹385, how much do 18 kites cost (in ₹)?
33. 33.Three temple bells ring every 4, 6 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
34. 34.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?
35. 35.What is the smallest number you must take away from 325 so that it divides exactly by 6?
36. 36.Which is closest to 4003 ÷ 49? (a) 800 (b) 160 (c) 40 (d) 80
37. 37.Find the LCM of 3, 14 and 2.
38. 38.A hostel has enough food for 6 students for 21 days. How many days will the same food last for 21 students?
39. 39.3.71 + 1.1 =
40. 40.5.99 + 4.5 =

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