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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 568 · 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. 1.1/2 − 2/6 =
  2. 2.Which is closest to 1807 ÷ 29? (a) 600 (b) 30 (c) 120 (d) 60
  3. 3.The ratio of boys to girls in a class is 5 : 3. There are 40 boys. How many girls are there?
  4. 4.Which is closest to 398 × 79? (Round each number first.) (a) 320000 (b) 3200 (c) 64000 (d) 32000
  5. 5.3 painters can paint a school in 8 days. How many days would 4 painters take, working at the same speed?
  6. 6.7.83 + 9.3 =
  7. 7.Find the LCM of 20 and 32.
  8. 8.Find the LCM of 11, 12 and 3.
  9. 9.The HCF of two numbers is 8 and their LCM is 576. One of the numbers is 72. What is the other number?
  10. 10.How many factors does 55 have?
  11. 11.3.55 + 3.7 =
  12. 12.The HCF of two numbers is 4 and their LCM is 84. One of the numbers is 12. What is the other number?
  13. 13.What percent of 400 is 304?
  14. 14.3 × (21 − 8) + 96 ÷ 8 =
  15. 15.Find the LCM of 9, 12 and 2.
  16. 16.4/5 × 2/3 =
  17. 17.What percent of 40 is 30?
  18. 18.4/10 + 3/4 =
  19. 19.Write 39/50 as a percent.
  20. 20.Three temple bells ring every 5, 4 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.72 ÷ 8 × 5 + 20 =
  22. 22.Two tanks hold 60 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.4/5 + 7/9 =
  24. 24.6/9 × 1/4 =
  25. 25.Find the LCM of 10 and 45.
  26. 26.Rahul scored 2 marks out of 40 in a test. What percentage did Rahul score?
  27. 27.Round 92.92 to one decimal place. =
  28. 28.How many factors does 72 have?
  29. 29.2 : 9 = 12 : ?
  30. 30.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 10, 12 or 9.
  31. 31.What is 25% of 520?
  32. 32.Find the HCF of 56 and 49.
  33. 33.A car goes 108 km on 6 litres of petrol. How far can it go on 18 litres (in km)?
  34. 34.(10 + 9) × 8 − 9 =
  35. 35.8/10 − 3/4 =
  36. 36.What is 40% of 440?
  37. 37.Find the LCM of 14, 4 and 10.
  38. 38.A car goes 90 km on 6 litres of petrol. How far can it go on 9 litres (in km)?
  39. 39.3 painters can paint a school in 25 days. How many days would 15 painters take, working at the same speed?
  40. 40.Find the HCF of 25 and 10.

Answer key

  1. 1/6
  2. 60
  3. 24
  4. 32000
  5. 6
  6. 17.13
  7. 160
  8. 132
  9. 64
  10. 4
  11. 7.25
  12. 28
  13. 76
  14. 51
  15. 36
  16. 8/15
  17. 75
  18. 23/20
  19. 78
  20. 40
  21. 65
  22. 15
  23. 71/45
  24. 1/6
  25. 90
  26. 5
  27. 92.9
  28. 12
  29. 54
  30. 184
  31. 130
  32. 7
  33. 324
  34. 143
  35. 1/20
  36. 176
  37. 140
  38. 135
  39. 5
  40. 5

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