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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 461 · 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 37 have?
  2. 2.1/4 × 1/2 =
  3. 3.Round 16687 to the nearest ten.
  4. 4.A car goes 253 km on 11 litres of petrol. How far can it go on 7 litres (in km)?
  5. 5.Round 27.82 to one decimal place. =
  6. 6.2/3 of 12 + 9 × 2 =
  7. 7.Find the LCM of 32 and 20.
  8. 8.2/10 + 2/4 =
  9. 9.22.5 ÷ 9 =
  10. 10.Round 70.51 to one decimal place. =
  11. 11.(2 + 4) × 4 − 18 =
  12. 12.A hall floor is 150 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.50 − 36 ÷ 6 × 5 =
  14. 14.A hall floor is 200 cm long and 175 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  15. 15.Find the LCM of 12, 8 and 5.
  16. 16.9 : 15 = 72 : ?
  17. 17.1.18 + 2.1 =
  18. 18.1.8 × 9 =
  19. 19.If 3 kg of rice costs ₹81, how many kg can you buy for ₹405?
  20. 20.How many factors does 81 have?
  21. 21.86 − 56 ÷ 8 × 9 =
  22. 22.The HCF of two numbers is 6 and their LCM is 240. One of the numbers is 48. What is the other number?
  23. 23.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  24. 24.15% of a number is 12. What is the number?
  25. 25.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 3, 6 or 15.
  26. 26.5 × (20 − 14) + 42 ÷ 7 =
  27. 27.Three temple bells ring every 15, 6 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Find the LCM of 12 and 10.
  29. 29.Priya scored 52 marks out of 80 in a test. What percentage did Priya score?
  30. 30.43 + 7 × 10 − 8 =
  31. 31.How many factors does 20 have?
  32. 32.Which is closest to 697 × 78? (Round each number first.) (a) 5600 (b) 56000 (c) 560000 (d) 112000
  33. 33.8 : 11 = 72 : ?
  34. 34.Round 44.14 to one decimal place. =
  35. 35.3 × (22 − 4) + 96 ÷ 8 =
  36. 36.How many factors does 93 have?
  37. 37.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  38. 38.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 15, 6 or 5.
  39. 39.Find the HCF of 35 and 30.
  40. 40.Round 86.91 to one decimal place. =

Answer key

  1. 2
  2. 1/8
  3. 16690
  4. 161
  5. 27.8
  6. 26
  7. 160
  8. 7/10
  9. 2.5
  10. 70.5
  11. 6
  12. 15
  13. 20
  14. 56
  15. 120
  16. 120
  17. 3.28
  18. 16.2
  19. 15
  20. 5
  21. 23
  22. 30
  23. 36
  24. 80
  25. 31
  26. 36
  27. 30
  28. 60
  29. 65
  30. 105
  31. 6
  32. 56000
  33. 99
  34. 44.1
  35. 66
  36. 4
  37. 45
  38. 34
  39. 5
  40. 86.9

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