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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 768 · 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 LCM of 15, 10 and 4.
  2. 2.The ratio of boys to girls in a class is 7 : 2. There are 56 boys. How many girls are there?
  3. 3.Find the HCF of 27 and 63.
  4. 4.2 : 5 = 12 : ?
  5. 5.How many factors does 70 have?
  6. 6.The ratio of boys to girls in a class is 6 : 1. There are 30 boys. How many girls are there?
  7. 7.Three temple bells ring every 24, 15 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.7 × (16 − 13) + 30 ÷ 6 =
  9. 9.If 11 cricket balls cost ₹572, how much do 15 cricket balls cost (in ₹)?
  10. 10.How many factors does 33 have?
  11. 11.Which is closest to 501 + 902 + 695? (a) 2200 (b) 2300 (c) 2000 (d) 2100
  12. 12.2/7 of 21 + 5 × 3 =
  13. 13.Three temple bells ring every 24, 10 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.What is 80% of 145?
  15. 15.Find the HCF of 25 and 35.
  16. 16.6 × (11 − 9) + 18 ÷ 2 =
  17. 17.What is the smallest number you must take away from 776 so that it divides exactly by 12?
  18. 18.What percent of 500 is 200?
  19. 19.(16 + 19) × 5 − 8 =
  20. 20.Which is closest to 598 × 71? (Round each number first.) (a) 42000 (b) 420000 (c) 4200 (d) 84000
  21. 21.How many factors does 98 have?
  22. 22.What is the smallest number you must add to 778 so that it divides exactly by 6?
  23. 23.20% of a number is 114. What is the number?
  24. 24.Find the HCF of 70 and 56.
  25. 25.What percent of 250 is 185?
  26. 26.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 3, 9 or 5.
  27. 27.5/9 × 1/4 =
  28. 28.If 5 kg of rice costs ₹280, how many kg can you buy for ₹840?
  29. 29.A car goes 96 km on 4 litres of petrol. How far can it go on 2 litres (in km)?
  30. 30.Three temple bells ring every 10, 4 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.1.56 + 1.6 =
  32. 32.Two tanks hold 315 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.What is the smallest number you must add to 488 so that it divides exactly by 6?
  34. 34.28 − 16 ÷ 8 × 3 =
  35. 35.Find the HCF of 77 and 99.
  36. 36.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  37. 37.Find the HCF of 18 and 48.
  38. 38.If 8 kg of rice costs ₹456, how many kg can you buy for ₹342?
  39. 39.What percent of 200 is 8?
  40. 40.What is the smallest number you must take away from 467 so that it divides exactly by 12?

Answer key

  1. 60
  2. 16
  3. 9
  4. 30
  5. 8
  6. 5
  7. 120
  8. 26
  9. 780
  10. 4
  11. 2100
  12. 21
  13. 120
  14. 116
  15. 5
  16. 21
  17. 8
  18. 40
  19. 167
  20. 42000
  21. 6
  22. 2
  23. 570
  24. 14
  25. 74
  26. 47
  27. 5/36
  28. 15
  29. 48
  30. 120
  31. 3.16
  32. 45
  33. 4
  34. 22
  35. 11
  36. 16
  37. 6
  38. 6
  39. 4
  40. 11

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