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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 200 · 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.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 3, 12 or 8.
  2. 2.Two tanks hold 360 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.Which is closest to 596 × 72? (Round each number first.) (a) 84000 (b) 420000 (c) 42000 (d) 4200
  4. 4.3 × (19 − 1) + 12 ÷ 4 =
  5. 5.Round 89.63 to one decimal place. =
  6. 6.Find the HCF of 117 and 104.
  7. 7.1/9 × 9/10 =
  8. 8.Two tanks hold 135 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.12% of a number is 33. What is the number?
  10. 10.Divide ₹160 between Dev and Ananya in the ratio 3 : 2. How much does Dev get (in ₹)?
  11. 11.How many factors does 32 have?
  12. 12.What is the smallest number you must add to 223 so that it divides exactly by 7?
  13. 13.14 ÷ 2 × 9 + 17 =
  14. 14.Which is closest to 600 × 32? (Round each number first.) (a) 1800 (b) 180000 (c) 36000 (d) 18000
  15. 15.What percent of 80 is 28?
  16. 16.60 ÷ 5 × 6 + 1 =
  17. 17.Find the LCM of 7, 3 and 4.
  18. 18.Three temple bells ring every 8, 10 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.What is 3/5 of ₹15?
  20. 20.Write 1/2 as a percent.
  21. 21.What is the smallest number you must add to 737 so that it divides exactly by 6?
  22. 22.The HCF of two numbers is 3 and their LCM is 189. One of the numbers is 21. What is the other number?
  23. 23.Which is closest to 899 × 48? (Round each number first.) (a) 450000 (b) 90000 (c) 45000 (d) 4500
  24. 24.Find the LCM of 10 and 6.
  25. 25.Three temple bells ring every 10, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.54 ÷ 6 × 3 + 22 =
  27. 27.9 ÷ 3 × 5 + 18 =
  28. 28.3.31 + 1.8 =
  29. 29.Three temple bells ring every 6, 12 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.What is the smallest number you must take away from 426 so that it divides exactly by 7?
  31. 31.Divide ₹495 between Aarav and Rahul in the ratio 8 : 7. How much does Aarav get (in ₹)?
  32. 32.If 2 cricket balls cost ₹100, how much do 6 cricket balls cost (in ₹)?
  33. 33.Find the LCM of 3, 9 and 5.
  34. 34.7 × (28 − 23) + 9 ÷ 3 =
  35. 35.56 ÷ 7 × 2 + 5 =
  36. 36.8 : 11 = 24 : ?
  37. 37.2/3 × 5/6 =
  38. 38.Farhan scored 12 marks out of 80 in a test. What percentage did Farhan score?
  39. 39.Which is closest to 802 × 62? (Round each number first.) (a) 96000 (b) 4800 (c) 480000 (d) 48000
  40. 40.Three temple bells ring every 8, 4 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 25
  2. 40
  3. 42000
  4. 57
  5. 89.6
  6. 13
  7. 1/10
  8. 45
  9. 275
  10. 96
  11. 6
  12. 1
  13. 80
  14. 18000
  15. 35
  16. 73
  17. 84
  18. 40
  19. 9
  20. 50
  21. 1
  22. 27
  23. 45000
  24. 30
  25. 90
  26. 49
  27. 33
  28. 5.11
  29. 60
  30. 6
  31. 264
  32. 300
  33. 45
  34. 38
  35. 21
  36. 33
  37. 5/9
  38. 15
  39. 48000
  40. 120

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