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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 295 · 40 questions
TalentJR

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?

NameDateTime takenScore ___ / 40
  1. 1.2.01 + 3.6 =
  2. 2.What percent of 250 is 185?
  3. 3.What percent of 25 is 16?
  4. 4.11/12 − 1/3 =
  5. 5.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 6 or 8.
  6. 6.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  7. 7.4.4 ÷ 2 =
  8. 8.What is the smallest number you must add to 475 so that it divides exactly by 3?
  9. 9.Find the LCM of 15, 5 and 11.
  10. 10.Find the HCF of 91 and 39.
  11. 11.Find the HCF of 56 and 42.
  12. 12.Aarav takes 90 seconds and Ishaan takes 50 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?
  13. 13.A hostel has enough food for 8 students for 11 days. How many days will the same food last for 11 students?
  14. 14.Find the LCM of 4, 14 and 2.
  15. 15.Which of these numbers divides exactly by 4? (a) 3932 (b) 3918 (c) 3142 (d) 6697
  16. 16.4 : 7 = 12 : ?
  17. 17.Which is closest to 601 × 18? (Round each number first.) (a) 24000 (b) 12000 (c) 1200 (d) 120000
  18. 18.10 ÷ 4 =
  19. 19.Farhan takes 75 seconds and Ishaan 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?
  20. 20.Round 31465 to the nearest hundred.
  21. 21.Which is closest to 1792 ÷ 29? (a) 120 (b) 30 (c) 60 (d) 600
  22. 22.The ratio of boys to girls in a class is 7 : 8. There are 70 boys. How many girls are there?
  23. 23.Which is closest to 595 ÷ 29? (a) 20 (b) 40 (c) 200 (d) 10
  24. 24.Find the LCM of 2, 9 and 10.
  25. 25.What is the smallest number you must add to 861 so that it divides exactly by 6?
  26. 26.8 : 3 = 32 : ?
  27. 27.A car goes 36 km on 3 litres of petrol. How far can it go on 27 litres (in km)?
  28. 28.What is the smallest number you must take away from 838 so that it divides exactly by 9?
  29. 29.Which is closest to 404 ÷ 21? (a) 200 (b) 20 (c) 10 (d) 40
  30. 30.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 10, 15 or 9.
  31. 31.What percent of 25 is 1?
  32. 32.Manav scored 3 marks out of 25 in a test. What percentage did Manav score?
  33. 33.6 : 13 = 18 : ?
  34. 34.2 : 12 = 8 : ?
  35. 35.(3 + 14) × 9 − 4 =
  36. 36.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  37. 37.Which of these numbers divides exactly by 4? (a) 7330 (b) 7060 (c) 1749 (d) 1895
  38. 38.How many factors does 32 have?
  39. 39.Find the LCM of 30 and 42.
  40. 40.The ratio of boys to girls in a class is 8 : 3. There are 32 boys. How many girls are there?

Answer key

  1. 5.61
  2. 74
  3. 64
  4. 7/12
  5. 121
  6. 50
  7. 2.2
  8. 2
  9. 165
  10. 13
  11. 14
  12. 450
  13. 8
  14. 28
  15. 3932
  16. 21
  17. 12000
  18. 2.5
  19. 225
  20. 31500
  21. 60
  22. 80
  23. 20
  24. 90
  25. 3
  26. 12
  27. 324
  28. 1
  29. 20
  30. 91
  31. 4
  32. 12
  33. 39
  34. 48
  35. 149
  36. 63
  37. 7060
  38. 6
  39. 210
  40. 12

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