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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 759 · 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. 1.43.2 ÷ 8 =
  2. 2.How many factors does 13 have?
  3. 3.The HCF of two numbers is 3 and their LCM is 54. One of the numbers is 27. What is the other number?
  4. 4.Find the LCM of 9 and 7.
  5. 5.Find the LCM of 36 and 32.
  6. 6.Round 70.83 to one decimal place. =
  7. 7.(18 + 18) × 3 − 27 =
  8. 8.5 × (20 − 17) + 32 ÷ 8 =
  9. 9.(9 + 4) × 7 − 29 =
  10. 10.Two tanks hold 30 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.What is 40% of 145?
  12. 12.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  13. 13.Three temple bells ring every 30, 9 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.Find the HCF of 39 and 26.
  15. 15.What is 30% of 10?
  16. 16.6.79 + 6.2 =
  17. 17.The ratio of boys to girls in a class is 7 : 1. There are 42 boys. How many girls are there?
  18. 18.Find the LCM of 35 and 10.
  19. 19.Find the LCM of 28 and 20.
  20. 20.4/7 of 77 + 4 × 6 =
  21. 21.What is 2/3 of 81 km?
  22. 22.3 × (13 − 1) + 8 ÷ 4 =
  23. 23.2/3 of 27 + 4 × 4 =
  24. 24.Find the smallest number bigger than 9 that leaves a remainder of 3 when divided by 9, 8 or 4.
  25. 25.A car goes 198 km on 9 litres of petrol. How far can it go on 37 litres (in km)?
  26. 26.Which is closest to 399 × 39? (Round each number first.) (a) 16000 (b) 1600 (c) 160000 (d) 32000
  27. 27.What is 25% of 260?
  28. 28.Find the LCM of 14, 7 and 3.
  29. 29.9.8 × 3 =
  30. 30.How many factors does 67 have?
  31. 31.Which of these numbers divides exactly by 8? (a) 6496 (b) 5732 (c) 2714 (d) 8975
  32. 32.The HCF of two numbers is 9 and their LCM is 315. One of the numbers is 45. What is the other number?
  33. 33.How many factors does 32 have?
  34. 34.Write 1/4 as a percent.
  35. 35.5% of a number is 16. What is the number?
  36. 36.8 ÷ 2 × 2 + 19 =
  37. 37.Find the HCF of 8 and 10.
  38. 38.3 × (24 − 7) + 42 ÷ 6 =
  39. 39.Which of these numbers divides exactly by 8? (a) 5608 (b) 7206 (c) 7939 (d) 8277
  40. 40.55 ÷ 5 × 3 + 25 =

Answer key

  1. 5.4
  2. 2
  3. 6
  4. 63
  5. 288
  6. 70.8
  7. 81
  8. 19
  9. 62
  10. 15
  11. 58
  12. 75
  13. 90
  14. 13
  15. 3
  16. 12.99
  17. 6
  18. 70
  19. 140
  20. 68
  21. 54
  22. 38
  23. 34
  24. 75
  25. 814
  26. 16000
  27. 65
  28. 42
  29. 29.4
  30. 2
  31. 6496
  32. 63
  33. 6
  34. 25
  35. 320
  36. 27
  37. 2
  38. 58
  39. 5608
  40. 58

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