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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 638 · 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.The ratio of boys to girls in a class is 5 : 9. There are 10 boys. How many girls are there?
  2. 2.What percent of 20 is 5?
  3. 3.6 × (14 − 11) + 25 ÷ 5 =
  4. 4.Find the LCM of 15, 7 and 5.
  5. 5.How many factors does 90 have?
  6. 6.What is 50% of 442?
  7. 7.The HCF of two numbers is 9 and their LCM is 324. One of the numbers is 36. What is the other number?
  8. 8.How many factors does 36 have?
  9. 9.20% of a number is 16. What is the number?
  10. 10.How many factors does 46 have?
  11. 11.Write 22/25 as a percent.
  12. 12.Find the HCF of 49 and 56.
  13. 13.What is 1/4 of 16 litres?
  14. 14.How many factors does 100 have?
  15. 15.3/8 of 96 + 7 × 7 =
  16. 16.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 5, 9 or 4.
  17. 17.3 painters can paint a school in 19 days. How many days would 19 painters take, working at the same speed?
  18. 18.47 + 10 × 2 − 20 =
  19. 19.If 12 kites cost ₹108, how much do 17 kites cost (in ₹)?
  20. 20.120% of a number is 246. What is the number?
  21. 21.120% of a number is 378. What is the number?
  22. 22.4.62 + 7.5 =
  23. 23.5 : 4 = 45 : ?
  24. 24.3 × (22 − 13) + 30 ÷ 5 =
  25. 25.Which is closest to 1196 ÷ 19? (a) 30 (b) 600 (c) 120 (d) 60
  26. 26.Which is closest to 697 × 92? (Round each number first.) (a) 63000 (b) 630000 (c) 6300 (d) 126000
  27. 27.35 ÷ 7 × 5 + 21 =
  28. 28.Which is closest to 2106 ÷ 31? (a) 35 (b) 700 (c) 140 (d) 70
  29. 29.Two tanks hold 20 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Three temple bells ring every 10, 15 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.11 painters can paint a school in 8 days. How many days would 22 painters take, working at the same speed?
  32. 32.Find the HCF of 36 and 60.
  33. 33.Which is closest to 1593 ÷ 41? (a) 20 (b) 80 (c) 40 (d) 400
  34. 34.If 8 kg of rice costs ₹592, how many kg can you buy for ₹296?
  35. 35.Find the LCM of 2, 10 and 8.
  36. 36.6/9 − 1/3 =
  37. 37.Two tanks hold 20 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  38. 38.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  39. 39.(17 + 10) × 5 − 8 =
  40. 40.50% of a number is 55. What is the number?

Answer key

  1. 18
  2. 25
  3. 23
  4. 105
  5. 12
  6. 221
  7. 81
  8. 9
  9. 80
  10. 4
  11. 88
  12. 7
  13. 4
  14. 9
  15. 85
  16. 182
  17. 3
  18. 47
  19. 153
  20. 205
  21. 315
  22. 12.12
  23. 36
  24. 33
  25. 60
  26. 63000
  27. 46
  28. 70
  29. 10
  30. 120
  31. 4
  32. 12
  33. 40
  34. 4
  35. 40
  36. 1/3
  37. 5
  38. 225
  39. 127
  40. 110

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