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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 781 · 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.What percent of 25 is 8?
  2. 2.Find the HCF of 15 and 24.
  3. 3.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  4. 4.Two tanks hold 90 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.9 : 12 = 45 : ?
  6. 6.Kabir takes 48 seconds and Sneha 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?
  7. 7.10.8 ÷ 6 =
  8. 8.What percent of 80 is 44?
  9. 9.14.4 ÷ 6 =
  10. 10.2.4 × 5 =
  11. 11.How many factors does 48 have?
  12. 12.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 8, 12 or 6.
  13. 13.54.4 ÷ 8 =
  14. 14.11 : 6 = 55 : ?
  15. 15.The HCF of two numbers is 6 and their LCM is 432. One of the numbers is 48. What is the other number?
  16. 16.What percent of 50 is 45?
  17. 17.Which of these numbers divides exactly by 6? (a) 3838 (b) 5972 (c) 1788 (d) 8746
  18. 18.What is the smallest number you must add to 659 so that it divides exactly by 3?
  19. 19.Which is closest to 202 × 39? (Round each number first.) (a) 80000 (b) 800 (c) 8000 (d) 16000
  20. 20.Round 12882 to the nearest ten.
  21. 21.Find the LCM of 28 and 24.
  22. 22.Three temple bells ring every 5, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.Two tanks hold 20 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.What is 80% of 330?
  25. 25.What is 12% of 25?
  26. 26.The HCF of two numbers is 6 and their LCM is 108. One of the numbers is 12. What is the other number?
  27. 27.How many factors does 65 have?
  28. 28.(9 + 12) × 6 − 13 =
  29. 29.Two tanks hold 180 litres and 315 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Which is closest to 996 ÷ 49? (a) 10 (b) 20 (c) 200 (d) 40
  31. 31.Which of these numbers divides exactly by 8? (a) 5078 (b) 8011 (c) 3456 (d) 8515
  32. 32.Find the HCF of 120 and 75.
  33. 33.Find the HCF of 54 and 24.
  34. 34.3/7 of 14 + 4 × 4 =
  35. 35.(18 + 3) × 8 − 22 =
  36. 36.Round 23666 to the nearest hundred.
  37. 37.Write 23/25 as a percent.
  38. 38.Find the HCF of 36 and 45.
  39. 39.Find the LCM of 6, 14 and 7.
  40. 40.35 − 15 ÷ 5 × 5 =

Answer key

  1. 32
  2. 3
  3. 125
  4. 45
  5. 60
  6. 240
  7. 1.8
  8. 55
  9. 2.4
  10. 12
  11. 10
  12. 26
  13. 6.8
  14. 30
  15. 54
  16. 90
  17. 1788
  18. 1
  19. 8000
  20. 12880
  21. 168
  22. 40
  23. 5
  24. 264
  25. 3
  26. 54
  27. 4
  28. 113
  29. 45
  30. 20
  31. 3456
  32. 15
  33. 6
  34. 22
  35. 146
  36. 23700
  37. 92
  38. 9
  39. 42
  40. 20

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