Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 805 · 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 LCM of 15 and 12.
2. 2.Two tanks hold 125 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
3. 3.75% of a number is 390. What is the number?
4. 4.Find the LCM of 2, 13 and 5.
5. 5.What percent of 400 is 372?
6. 6.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 10, 15 or 12.
7. 7.If 3 kg of rice costs ₹219, how many kg can you buy for ₹146?
8. 8.If 5 kg of rice costs ₹285, how many kg can you buy for ₹342?
9. 9.Aditya takes 45 seconds and Tara takes 30 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.Two tanks hold 200 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
11. 11.Three temple bells ring every 5, 6 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
12. 12.A hostel has enough food for 3 students for 11 days. How many days will the same food last for 11 students?
13. 13.A car goes 38 km on 2 litres of petrol. How far can it go on 35 litres (in km)?
14. 14.Aarav takes 72 seconds and Vivaan 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?
15. 15.What is 75% of 40?
16. 16.1/2 + 2/10 =
17. 17.Which is closest to 402 × 81? (Round each number first.) (a) 320000 (b) 32000 (c) 3200 (d) 64000
18. 18.If 8 pens cost ₹72, how much do 5 pens cost (in ₹)?
19. 19.Round 78.23 to one decimal place. =
20. 20.The ratio of boys to girls in a class is 9 : 1. There are 45 boys. How many girls are there?
21. 21.Two tanks hold 80 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
22. 22.How many factors does 46 have?
23. 23.What is 15% of 440?
24. 24.If 8 cricket balls cost ₹184, how much do 2 cricket balls cost (in ₹)?
25. 25.Two tanks hold 405 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
26. 26.Two tanks hold 75 litres and 175 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
27. 27.What is 1/2 of ₹58?
28. 28.What is 15% of 360?
29. 29.If 9 kg of rice costs ₹270, how many kg can you buy for ₹420?
30. 30.(7 + 11) × 2 − 19 =
31. 31.A car goes 20 km on 2 litres of petrol. How far can it go on 20 litres (in km)?
32. 32.Find the LCM of 10 and 16.
33. 33.A car goes 72 km on 6 litres of petrol. How far can it go on 39 litres (in km)?
34. 34.What is the smallest number you must take away from 298 so that it divides exactly by 6?
35. 35.Divide ₹266 between Saanvi and Dev in the ratio 4 : 3. How much does Saanvi get (in ₹)?
36. 36.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 10, 12 or 9.
37. 37.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 4, 9 or 10.
38. 38.9 ÷ 3 × 4 + 20 =
39. 39.Round 55.27 to one decimal place. =
40. 40.6.65 + 6.5 =

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