Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 334 · 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.Two tanks hold 105 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
2. 2.Three temple bells ring every 20, 8 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
3. 3.Which of these numbers divides exactly by 4? (a) 9201 (b) 8241 (c) 8163 (d) 5132
4. 4.Which is closest to 3603 ÷ 39? (a) 90 (b) 45 (c) 180 (d) 900
5. 5.18 + 7 × 4 − 14 =
6. 6.Two tanks hold 40 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
7. 7.What is 3/5 of 60 litres?
8. 8.The ratio of boys to girls in a class is 7 : 2. There are 14 boys. How many girls are there?
9. 9.Find the LCM of 45 and 35.
10. 10.What is 120% of 165?
11. 11.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?
12. 12.Divide ₹35 between Zoya and Arjun in the ratio 3 : 2. How much does Arjun get (in ₹)?
13. 13.The HCF of two numbers is 6 and their LCM is 180. One of the numbers is 30. What is the other number?
14. 14.What is the smallest number you must take away from 129 so that it divides exactly by 7?
15. 15.Two tanks hold 80 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
16. 16.Which of these numbers divides exactly by 3? (a) 2247 (b) 5696 (c) 4393 (d) 4168
17. 17.What is the smallest number you must add to 753 so that it divides exactly by 4?
18. 18.5 ÷ 2 =
19. 19.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
20. 20.Divide ₹180 between Diya and Isha in the ratio 8 : 1. How much does Diya get (in ₹)?
21. 21.Aditya takes 36 seconds and Aarav takes 90 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 the smallest number you must add to 940 so that it divides exactly by 11?
23. 23.Sneha takes 80 seconds and Kavya takes 36 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?
24. 24.What is the smallest number you must take away from 426 so that it divides exactly by 7?
25. 25.What is the smallest number you must take away from 896 so that it divides exactly by 3?
26. 26.24 + 3 × 3 − 24 =
27. 27.What is 150% of 442?
28. 28.Which is closest to 203 × 88? (Round each number first.) (a) 180000 (b) 1800 (c) 36000 (d) 18000
29. 29.If 3 kg of rice costs ₹252, how many kg can you buy for ₹420?
30. 30.6 × (26 − 23) + 36 ÷ 9 =
31. 31.Round 80.72 to one decimal place. =
32. 32.Find the LCM of 27 and 6.
33. 33.Priya takes 72 seconds and Vivaan 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?
34. 34.2.98 + 2.2 =
35. 35.Find the HCF of 18 and 16.
36. 36.(20 + 11) × 8 − 25 =
37. 37.Divide ₹154 between Dev and Pooja in the ratio 6 : 5. How much does Dev get (in ₹)?
38. 38.Find the HCF of 49 and 35.
39. 39.6 painters can paint a school in 6 days. How many days would 4 painters take, working at the same speed?
40. 40.4 × (17 − 12) + 42 ÷ 6 =

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