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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 675 · 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 of these numbers divides exactly by 4? (a) 2154 (b) 1298 (c) 8536 (d) 6549
  2. 2.Find the smallest number bigger than 10 that leaves a remainder of 3 when divided by 9, 10 or 5.
  3. 3.Find the LCM of 12, 2 and 7.
  4. 4.What is the smallest number you must take away from 702 so that it divides exactly by 4?
  5. 5.3 painters can paint a school in 21 days. How many days would 9 painters take, working at the same speed?
  6. 6.Find the LCM of 5 and 6.
  7. 7.(3 + 17) × 7 − 7 =
  8. 8.What is 1/6 of 30 kg?
  9. 9.What is the smallest number you must take away from 703 so that it divides exactly by 6?
  10. 10.Which is closest to 791 ÷ 39? (a) 40 (b) 200 (c) 20 (d) 10
  11. 11.The ratio of boys to girls in a class is 3 : 2. There are 21 boys. How many girls are there?
  12. 12.Nisha scored 49 marks out of 50 in a test. What percentage did Nisha score?
  13. 13.Find the HCF of 6 and 21.
  14. 14.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 8, 15 or 3.
  15. 15.17 + 7 × 3 − 1 =
  16. 16.24 ÷ 2 × 3 + 29 =
  17. 17.Find the LCM of 6, 3 and 12.
  18. 18.Which is closest to 297 + 402 + 601? (a) 1200 (b) 1500 (c) 1400 (d) 1300
  19. 19.What is the smallest number you must add to 170 so that it divides exactly by 7?
  20. 20.What is the smallest number you must take away from 913 so that it divides exactly by 12?
  21. 21.2 : 13 = 4 : ?
  22. 22.How many factors does 56 have?
  23. 23.Three temple bells ring every 4, 6 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Find the LCM of 3, 2 and 14.
  25. 25.Write 1/4 as a percent.
  26. 26.5/9 − 3/6 =
  27. 27.Three temple bells ring every 20, 10 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.How many factors does 73 have?
  29. 29.Two tanks hold 20 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.25 − 6 ÷ 2 × 3 =
  31. 31.18 − 4 ÷ 2 × 3 =
  32. 32.What percent of 25 is 8?
  33. 33.Two tanks hold 400 litres and 450 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.The ratio of boys to girls in a class is 4 : 9. There are 16 boys. How many girls are there?
  35. 35.Three temple bells ring every 6, 12 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.9 painters can paint a school in 10 days. How many days would 18 painters take, working at the same speed?
  37. 37.62 − 30 ÷ 6 × 8 =
  38. 38.Find the LCM of 30 and 36.
  39. 39.Find the HCF of 16 and 20.
  40. 40.Which is closest to 796 × 31? (Round each number first.) (a) 2400 (b) 24000 (c) 240000 (d) 48000

Answer key

  1. 8536
  2. 93
  3. 84
  4. 2
  5. 7
  6. 30
  7. 133
  8. 5
  9. 1
  10. 20
  11. 14
  12. 98
  13. 3
  14. 121
  15. 37
  16. 65
  17. 12
  18. 1300
  19. 5
  20. 1
  21. 26
  22. 8
  23. 24
  24. 42
  25. 25
  26. 1/18
  27. 60
  28. 2
  29. 5
  30. 16
  31. 12
  32. 32
  33. 50
  34. 36
  35. 36
  36. 5
  37. 22
  38. 180
  39. 4
  40. 24000

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