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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 970 · 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.What is the smallest number you must take away from 650 so that it divides exactly by 7?
  2. 2.30% of a number is 144. What is the number?
  3. 3.Find the LCM of 8, 4 and 15.
  4. 4.(2 + 15) × 2 − 7 =
  5. 5.5 : 3 = 10 : ?
  6. 6.A hall floor is 350 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  7. 7.Which is closest to 804 × 19? (Round each number first.) (a) 160000 (b) 16000 (c) 32000 (d) 1600
  8. 8.Two tanks hold 240 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.Round 82421 to the nearest ten.
  10. 10.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  11. 11.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 3, 12 or 9.
  12. 12.10 ÷ 5 × 5 + 16 =
  13. 13.Three temple bells ring every 24, 10 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.Three temple bells ring every 30, 15 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.2/4 + 1/5 =
  16. 16.Find the HCF of 49 and 14.
  17. 17.What is 2/3 of ₹60?
  18. 18.Write 1/2 as a percent.
  19. 19.14 ÷ 7 × 5 + 27 =
  20. 20.What is the smallest number you must take away from 652 so that it divides exactly by 8?
  21. 21.Find the smallest number bigger than 15 that leaves a remainder of 7 when divided by 15, 12 or 9.
  22. 22.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 9 or 4.
  23. 23.Find the LCM of 14, 5 and 2.
  24. 24.Ishaan scored 9 marks out of 50 in a test. What percentage did Ishaan score?
  25. 25.Farhan takes 48 seconds and Dev takes 72 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  26. 26.24 ÷ 8 × 9 + 2 =
  27. 27.How many factors does 75 have?
  28. 28.Two tanks hold 30 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  29. 29.6/12 − 2/5 =
  30. 30.Ishaan scored 12 marks out of 50 in a test. What percentage did Ishaan score?
  31. 31.2.8 ÷ 2 =
  32. 32.What percent of 20 is 15?
  33. 33.11 : 5 = 88 : ?
  34. 34.Round 65476 to the nearest ten.
  35. 35.What percent of 250 is 55?
  36. 36.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  37. 37.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  38. 38.30% of a number is 105. What is the number?
  39. 39.Round 66.94 to one decimal place. =
  40. 40.How many factors does 43 have?

Answer key

  1. 6
  2. 480
  3. 120
  4. 27
  5. 6
  6. 35
  7. 16000
  8. 30
  9. 82420
  10. 28
  11. 38
  12. 26
  13. 120
  14. 90
  15. 7/10
  16. 7
  17. 40
  18. 50
  19. 37
  20. 4
  21. 187
  22. 181
  23. 70
  24. 18
  25. 144
  26. 29
  27. 6
  28. 10
  29. 1/10
  30. 24
  31. 1.4
  32. 75
  33. 40
  34. 65480
  35. 22
  36. 225
  37. 54
  38. 350
  39. 66.9
  40. 2

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