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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 388 · 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.How many factors does 87 have?
  2. 2.The HCF of two numbers is 2 and their LCM is 90. One of the numbers is 10. What is the other number?
  3. 3.Aarav scored 38 marks out of 40 in a test. What percentage did Aarav score?
  4. 4.Round 63108 to the nearest ten.
  5. 5.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  6. 6.9 : 11 = 36 : ?
  7. 7.What is 150% of 6?
  8. 8.7 × (13 − 4) + 12 ÷ 4 =
  9. 9.Divide ₹99 between Nisha and Karan in the ratio 5 : 6. How much does Nisha get (in ₹)?
  10. 10.10/11 − 2/4 =
  11. 11.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 6, 15 or 4.
  12. 12.6/7 × 1/10 =
  13. 13.Find the LCM of 4, 5 and 2.
  14. 14.30 ÷ 3 × 2 + 4 =
  15. 15.Find the HCF of 21 and 14.
  16. 16.The HCF of two numbers is 9 and their LCM is 270. One of the numbers is 54. What is the other number?
  17. 17.Round 40.07 to one decimal place. =
  18. 18.Find the smallest number bigger than 15 that leaves a remainder of 5 when divided by 15, 10 or 9.
  19. 19.81.9 ÷ 9 =
  20. 20.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  21. 21.If 9 kg of rice costs ₹450, how many kg can you buy for ₹150?
  22. 22.Which of these numbers divides exactly by 4? (a) 2364 (b) 3333 (c) 7423 (d) 3959
  23. 23.(18 + 16) × 4 − 12 =
  24. 24.48 − 6 ÷ 3 × 5 =
  25. 25.Find the LCM of 12 and 30.
  26. 26.The HCF of two numbers is 4 and their LCM is 40. One of the numbers is 8. What is the other number?
  27. 27.Find the LCM of 3, 12 and 15.
  28. 28.4.8 × 3 =
  29. 29.Round 98.21 to one decimal place. =
  30. 30.The ratio of boys to girls in a class is 5 : 1. There are 30 boys. How many girls are there?
  31. 31.Which is closest to 700 × 82? (Round each number first.) (a) 560000 (b) 5600 (c) 56000 (d) 112000
  32. 32.2/3 + 3/7 =
  33. 33.Three temple bells ring every 15, 8 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.How many factors does 54 have?
  35. 35.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 12, 15 or 5.
  36. 36.Round 25.73 to one decimal place. =
  37. 37.What percent of 400 is 304?
  38. 38.Find the LCM of 5 and 8.
  39. 39.What percent of 500 is 345?
  40. 40.2 : 15 = 14 : ?

Answer key

  1. 4
  2. 18
  3. 95
  4. 63110
  5. 72
  6. 44
  7. 9
  8. 66
  9. 45
  10. 9/22
  11. 63
  12. 3/35
  13. 20
  14. 24
  15. 7
  16. 45
  17. 40.1
  18. 95
  19. 9.1
  20. 24
  21. 3
  22. 2364
  23. 124
  24. 38
  25. 60
  26. 20
  27. 60
  28. 14.4
  29. 98.2
  30. 6
  31. 56000
  32. 23/21
  33. 120
  34. 8
  35. 62
  36. 25.7
  37. 76
  38. 40
  39. 69
  40. 105

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