Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 223 · 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 80 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
2. 2.How many factors does 87 have?
3. 3.11 : 2 = 88 : ?
4. 4.What percent of 250 is 5?
5. 5.Three temple bells ring every 24, 6 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
6. 6.(19 + 6) × 8 − 13 =
7. 7.A hostel has enough food for 11 students for 22 days. How many days will the same food last for 22 students?
8. 8.If 7 kg of rice costs ₹427, how many kg can you buy for ₹671?
9. 9.The ratio of boys to girls in a class is 7 : 3. There are 21 boys. How many girls are there?
10. 10.What is the smallest number you must add to 825 so that it divides exactly by 6?
11. 11.What is the smallest number you must take away from 333 so that it divides exactly by 7?
12. 12.Two tanks hold 360 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
13. 13.Two tanks hold 200 litres and 125 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
14. 14.Three temple bells ring every 30, 12 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
15. 15.Which of these numbers divides exactly by 3? (a) 7535 (b) 6409 (c) 1755 (d) 4568
16. 16.What is 3/7 of 203 students?
17. 17.A hall floor is 240 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
18. 18.Find the HCF of 12 and 54.
19. 19.The HCF of two numbers is 6 and their LCM is 36. One of the numbers is 18. What is the other number?
20. 20.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
21. 21.Which is closest to 602 × 50? (Round each number first.) (a) 30000 (b) 300000 (c) 60000 (d) 3000
22. 22.1/8 − 1/11 =
23. 23.32 + 9 × 7 − 24 =
24. 24.Divide ₹360 between Nisha and Kabir in the ratio 1 : 9. How much does Nisha get (in ₹)?
25. 25.60% of a number is 219. What is the number?
26. 26.If 5 kg of rice costs ₹225, how many kg can you buy for ₹540?
27. 27.If 7 cricket balls cost ₹42, how much do 19 cricket balls cost (in ₹)?
28. 28.What is the smallest number you must take away from 104 so that it divides exactly by 7?
29. 29.Which is closest to 699 × 88? (Round each number first.) (a) 6300 (b) 630000 (c) 63000 (d) 126000
30. 30.A hall floor is 125 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
31. 31.5/12 + 1/2 =
32. 32.If 4 kg of rice costs ₹336, how many kg can you buy for ₹168?
33. 33.Find the LCM of 36 and 28.
34. 34.2/3 × 2/4 =
35. 35.7 painters can paint a school in 9 days. How many days would 9 painters take, working at the same speed?
36. 36.Rahul scored 30 marks out of 50 in a test. What percentage did Rahul score?
37. 37.What is the smallest number you must add to 328 so that it divides exactly by 3?
38. 38.6.83 + 7.3 =
39. 39.What is the smallest number you must take away from 868 so that it divides exactly by 12?
40. 40.Isha takes 72 seconds and Karan 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?

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude