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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 446 · 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.Which is closest to 402 × 78? (Round each number first.) (a) 32000 (b) 320000 (c) 3200 (d) 64000
  2. 2.Farhan scored 8 marks out of 25 in a test. What percentage did Farhan score?
  3. 3.What is 7/8 of 24 km?
  4. 4.What is 15% of 520?
  5. 5.What is 2/3 of 9 litres?
  6. 6.The HCF of two numbers is 3 and their LCM is 63. One of the numbers is 21. What is the other number?
  7. 7.A car goes 75 km on 3 litres of petrol. How far can it go on 5 litres (in km)?
  8. 8.What is the smallest number you must take away from 617 so that it divides exactly by 9?
  9. 9.Three temple bells ring every 30, 20 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Which is closest to 402 × 89? (Round each number first.) (a) 36000 (b) 72000 (c) 3600 (d) 360000
  11. 11.20% of a number is 52. What is the number?
  12. 12.What is 5/6 of 156 kg?
  13. 13.Find the LCM of 3, 4 and 8.
  14. 14.Find the LCM of 6, 11 and 9.
  15. 15.44 ÷ 4 × 9 + 30 =
  16. 16.Find the LCM of 4 and 18.
  17. 17.Find the HCF of 48 and 36.
  18. 18.The HCF of two numbers is 8 and their LCM is 240. One of the numbers is 40. What is the other number?
  19. 19.What percent of 80 is 60?
  20. 20.Find the LCM of 10, 3 and 15.
  21. 21.Find the LCM of 45 and 10.
  22. 22.6/8 × 4/9 =
  23. 23.19.4 ÷ 2 =
  24. 24.How many factors does 30 have?
  25. 25.A car goes 80 km on 10 litres of petrol. How far can it go on 32 litres (in km)?
  26. 26.The HCF of two numbers is 8 and their LCM is 360. One of the numbers is 72. What is the other number?
  27. 27.A car goes 42 km on 2 litres of petrol. How far can it go on 20 litres (in km)?
  28. 28.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  29. 29.4/6 + 6/10 =
  30. 30.Find the LCM of 8 and 36.
  31. 31.25% of a number is 36. What is the number?
  32. 32.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  33. 33.Write 8/25 as a percent.
  34. 34.8/12 + 1/2 =
  35. 35.8/10 × 1/4 =
  36. 36.2.79 + 9.8 =
  37. 37.12 + 6 × 12 − 8 =
  38. 38.The HCF of two numbers is 7 and their LCM is 70. One of the numbers is 14. What is the other number?
  39. 39.What is 1/3 of 63 litres?
  40. 40.Which of these numbers divides exactly by 9? (a) 1600 (b) 8801 (c) 7875 (d) 1954

Answer key

  1. 32000
  2. 32
  3. 21
  4. 78
  5. 6
  6. 9
  7. 125
  8. 5
  9. 60
  10. 36000
  11. 260
  12. 130
  13. 24
  14. 198
  15. 129
  16. 36
  17. 12
  18. 48
  19. 75
  20. 30
  21. 90
  22. 1/3
  23. 9.7
  24. 8
  25. 256
  26. 40
  27. 420
  28. 24
  29. 19/15
  30. 72
  31. 144
  32. 12
  33. 32
  34. 7/6
  35. 1/5
  36. 12.59
  37. 76
  38. 35
  39. 21
  40. 7875

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