Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 46 · 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 2 kg of rice costs ₹90, how many kg can you buy for ₹630?
2. 2.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 5, 4 or 12.
3. 3.How many factors does 23 have?
4. 4.The HCF of two numbers is 6 and their LCM is 336. One of the numbers is 48. What is the other number?
5. 5.108 ÷ 9 × 5 + 5 =
6. 6.Find the LCM of 12 and 16.
7. 7.Two tanks hold 50 litres and 175 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
8. 8.A hall floor is 280 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
9. 9.Three temple bells ring every 30, 20 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
10. 10.What is the smallest number you must add to 691 so that it divides exactly by 11?
11. 11.If 3 pens cost ₹12, how much do 6 pens cost (in ₹)?
12. 12.Divide ₹440 between Meera and Ananya in the ratio 3 : 5. How much does Meera get (in ₹)?
13. 13.Three temple bells ring every 9, 15 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
14. 14.8.8 ÷ 8 =
15. 15.Divide ₹256 between Farhan and Saanvi in the ratio 9 : 7. How much does Farhan get (in ₹)?
16. 16.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 4, 3 or 9.
17. 17.A car goes 36 km on 4 litres of petrol. How far can it go on 10 litres (in km)?
18. 18.Diya takes 72 seconds and Rohan 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.Find the LCM of 12, 10 and 3.
20. 20.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 8 or 6.
21. 21.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 9. What is the other number?
22. 22.Round 84.52 to one decimal place. =
23. 23.Three temple bells ring every 12, 5 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
24. 24.Find the LCM of 9 and 15.
25. 25.Three temple bells ring every 9, 5 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
26. 26.32 + 8 × 8 − 20 =
27. 27.(4 + 2) × 9 − 29 =
28. 28.If 6 notebooks cost ₹324, how much do 5 notebooks cost (in ₹)?
29. 29.Saanvi takes 45 seconds and Ananya takes 54 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?
30. 30.Which is closest to 899 × 70? (Round each number first.) (a) 6300 (b) 630000 (c) 126000 (d) 63000
31. 31.The ratio of boys to girls in a class is 5 : 2. There are 25 boys. How many girls are there?
32. 32.Which is closest to 2091 ÷ 29? (a) 140 (b) 700 (c) 70 (d) 35
33. 33.The ratio of boys to girls in a class is 3 : 5. There are 15 boys. How many girls are there?
34. 34.Find the HCF of 12 and 16.
35. 35.Find the HCF of 20 and 25.
36. 36.Round 36144 to the nearest hundred.
37. 37.22 + 3 × 2 − 17 =
38. 38.Divide ₹27 between Priya and Meera in the ratio 1 : 2. How much does Meera get (in ₹)?
39. 39.Which is closest to 197 + 297 + 398? (a) 800 (b) 1100 (c) 900 (d) 1000
40. 40.What is the smallest number you must add to 705 so that it divides exactly by 6?

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