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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 187 · 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. 1.12 : 4 = 96 : ?
  2. 2.Find the LCM of 2, 6 and 11.
  3. 3.What is the smallest number you must add to 310 so that it divides exactly by 9?
  4. 4.What is the smallest number you must add to 598 so that it divides exactly by 3?
  5. 5.The HCF of two numbers is 7 and their LCM is 70. One of the numbers is 35. What is the other number?
  6. 6.6 painters can paint a school in 14 days. How many days would 12 painters take, working at the same speed?
  7. 7.How many factors does 56 have?
  8. 8.Write 21/25 as a percent.
  9. 9.39 + 2 × 4 − 5 =
  10. 10.Write 1/4 as a percent.
  11. 11.15% of a number is 48. What is the number?
  12. 12.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  13. 13.What is 1/3 of 66 students?
  14. 14.Find the LCM of 4, 6 and 13.
  15. 15.Round 29.74 to one decimal place. =
  16. 16.What is the smallest number you must take away from 202 so that it divides exactly by 12?
  17. 17.Which is closest to 298 × 60? (Round each number first.) (a) 180000 (b) 1800 (c) 18000 (d) 36000
  18. 18.What is 15% of 400?
  19. 19.Which is closest to 203 × 90? (Round each number first.) (a) 180000 (b) 18000 (c) 1800 (d) 36000
  20. 20.Find the HCF of 28 and 36.
  21. 21.If 9 pencil boxes cost ₹360, how much do 12 pencil boxes cost (in ₹)?
  22. 22.7.7 × 6 =
  23. 23.Which is closest to 1494 ÷ 49? (a) 300 (b) 30 (c) 60 (d) 15
  24. 24.Which is closest to 796 + 200 + 99? (a) 1300 (b) 1100 (c) 1000 (d) 1200
  25. 25.Three temple bells ring every 12, 15 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.9 : 6 = 36 : ?
  27. 27.Diya scored 5 marks out of 50 in a test. What percentage did Diya score?
  28. 28.The ratio of boys to girls in a class is 1 : 2. There are 9 boys. How many girls are there?
  29. 29.5 : 3 = 15 : ?
  30. 30.5/7 × 1/11 =
  31. 31.Find the smallest number bigger than 15 that leaves a remainder of 5 when divided by 6, 15 or 10.
  32. 32.Write 13/20 as a percent.
  33. 33.What is 3/4 of 112 students?
  34. 34.4 : 10 = 28 : ?
  35. 35.9.6 × 4 =
  36. 36.4.5 × 5 =
  37. 37.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 3, 15 or 9.
  38. 38.1/4 of 32 + 2 × 7 =
  39. 39.Find the LCM of 15 and 27.
  40. 40.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 32
  2. 66
  3. 5
  4. 2
  5. 14
  6. 7
  7. 8
  8. 84
  9. 42
  10. 25
  11. 320
  12. 150
  13. 22
  14. 156
  15. 29.7
  16. 10
  17. 18000
  18. 60
  19. 18000
  20. 4
  21. 480
  22. 46.2
  23. 30
  24. 1100
  25. 60
  26. 24
  27. 10
  28. 18
  29. 9
  30. 5/77
  31. 35
  32. 65
  33. 84
  34. 70
  35. 38.4
  36. 22.5
  37. 47
  38. 22
  39. 135
  40. 21

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