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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 22 · 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 HCF of two numbers is 2 and their LCM is 112. One of the numbers is 16. What is the other number?
  2. 2.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 6, 9 or 4.
  3. 3.Rohan scored 6 marks out of 25 in a test. What percentage did Rohan score?
  4. 4.Find the LCM of 48 and 30.
  5. 5.Three temple bells ring every 8, 5 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.35 ÷ 5 × 3 + 16 =
  7. 7.Find the HCF of 35 and 14.
  8. 8.Find the HCF of 15 and 20.
  9. 9.What is the smallest number you must add to 275 so that it divides exactly by 13?
  10. 10.1/2 × 4/6 =
  11. 11.120 − 81 ÷ 9 × 9 =
  12. 12.Two tanks hold 80 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.4/5 of 25 + 4 × 5 =
  14. 14.Divide ₹418 between Aarav and Kabir in the ratio 2 : 9. How much does Aarav get (in ₹)?
  15. 15.Which is closest to 96 + 697 + 301? (a) 1000 (b) 1200 (c) 1300 (d) 1100
  16. 16.Which is closest to 600 × 31? (Round each number first.) (a) 180000 (b) 18000 (c) 1800 (d) 36000
  17. 17.Find the LCM of 4, 3 and 11.
  18. 18.8.79 + 8.7 =
  19. 19.Which is closest to 403 × 68? (Round each number first.) (a) 280000 (b) 28000 (c) 2800 (d) 56000
  20. 20.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 9, 10 or 12.
  21. 21.2/3 − 1/10 =
  22. 22.Three temple bells ring every 10, 6 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.Write 17/20 as a percent.
  24. 24.50% of a number is 27. What is the number?
  25. 25.2/3 of 9 + 8 × 2 =
  26. 26.Write 3/20 as a percent.
  27. 27.3 × (29 − 19) + 48 ÷ 4 =
  28. 28.The ratio of boys to girls in a class is 2 : 9. There are 6 boys. How many girls are there?
  29. 29.12 : 9 = 108 : ?
  30. 30.Nisha scored 12 marks out of 20 in a test. What percentage did Nisha score?
  31. 31.Round 77.86 to one decimal place. =
  32. 32.The HCF of two numbers is 4 and their LCM is 80. One of the numbers is 16. What is the other number?
  33. 33.The ratio of boys to girls in a class is 9 : 1. There are 72 boys. How many girls are there?
  34. 34.Round 45.71 to one decimal place. =
  35. 35.Which is closest to 597 × 61? (Round each number first.) (a) 360000 (b) 3600 (c) 36000 (d) 72000
  36. 36.If 3 kg of rice costs ₹96, how many kg can you buy for ₹320?
  37. 37.64 ÷ 8 × 5 + 6 =
  38. 38.Which of these numbers divides exactly by 8? (a) 6328 (b) 1513 (c) 2713 (d) 8811
  39. 39.If 2 kg of rice costs ₹168, how many kg can you buy for ₹504?
  40. 40.16 ÷ 4 × 5 + 14 =

Answer key

  1. 14
  2. 37
  3. 24
  4. 240
  5. 120
  6. 37
  7. 7
  8. 5
  9. 11
  10. 1/3
  11. 39
  12. 10
  13. 40
  14. 76
  15. 1100
  16. 18000
  17. 132
  18. 17.49
  19. 28000
  20. 183
  21. 17/30
  22. 60
  23. 85
  24. 54
  25. 22
  26. 15
  27. 42
  28. 27
  29. 81
  30. 60
  31. 77.9
  32. 20
  33. 8
  34. 45.7
  35. 36000
  36. 10
  37. 46
  38. 6328
  39. 6
  40. 34

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