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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 992 · 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 50% of 64?
  2. 2.9.49 + 6.7 =
  3. 3.Which is closest to 697 × 19? (Round each number first.) (a) 28000 (b) 1400 (c) 140000 (d) 14000
  4. 4.40 ÷ 4 × 5 + 29 =
  5. 5.(9 + 7) × 3 − 11 =
  6. 6.2/3 × 1/2 =
  7. 7.Three temple bells ring every 5, 30 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.Find the LCM of 3 and 7.
  9. 9.25.5 ÷ 3 =
  10. 10.Which is closest to 397 × 89? (Round each number first.) (a) 360000 (b) 3600 (c) 36000 (d) 72000
  11. 11.29 − 21 ÷ 7 × 3 =
  12. 12.4.6 ÷ 2 =
  13. 13.Round 10.69 to one decimal place. =
  14. 14.The ratio of boys to girls in a class is 4 : 3. There are 12 boys. How many girls are there?
  15. 15.Which is closest to 1507 ÷ 49? (a) 300 (b) 15 (c) 30 (d) 60
  16. 16.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 9, 4 or 12.
  17. 17.What is the smallest number you must take away from 279 so that it divides exactly by 12?
  18. 18.Divide ₹754 between Zoya and Isha in the ratio 7 : 6. How much does Zoya get (in ₹)?
  19. 19.Round 53317 to the nearest hundred.
  20. 20.11 : 8 = 33 : ?
  21. 21.Find the HCF of 60 and 105.
  22. 22.The ratio of boys to girls in a class is 9 : 4. There are 27 boys. How many girls are there?
  23. 23.Find the LCM of 10 and 16.
  24. 24.5 : 7 = 40 : ?
  25. 25.The HCF of two numbers is 9 and their LCM is 135. One of the numbers is 27. What is the other number?
  26. 26.Two tanks hold 20 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.(17 + 18) × 3 − 6 =
  28. 28.7.8 ÷ 2 =
  29. 29.Round 42.83 to one decimal place. =
  30. 30.Find the LCM of 12, 8 and 3.
  31. 31.10 : 14 = 30 : ?
  32. 32.Find the LCM of 21 and 15.
  33. 33.What percent of 80 is 20?
  34. 34.Two tanks hold 40 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 6 or 9.
  36. 36.Which is closest to 803 × 18? (Round each number first.) (a) 16000 (b) 1600 (c) 32000 (d) 160000
  37. 37.32 + 11 × 4 − 4 =
  38. 38.Find the LCM of 42 and 24.
  39. 39.Sneha scored 19 marks out of 25 in a test. What percentage did Sneha score?
  40. 40.Find the LCM of 10, 6 and 15.

Answer key

  1. 32
  2. 16.19
  3. 14000
  4. 79
  5. 37
  6. 1/3
  7. 60
  8. 21
  9. 8.5
  10. 36000
  11. 20
  12. 2.3
  13. 10.7
  14. 9
  15. 30
  16. 39
  17. 3
  18. 406
  19. 53300
  20. 24
  21. 15
  22. 12
  23. 80
  24. 56
  25. 45
  26. 5
  27. 99
  28. 3.9
  29. 42.8
  30. 24
  31. 42
  32. 105
  33. 25
  34. 5
  35. 92
  36. 16000
  37. 72
  38. 168
  39. 76
  40. 30

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