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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 125 · 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. 1.8 painters can paint a school in 26 days. How many days would 16 painters take, working at the same speed?
  2. 2.What is the smallest number you must take away from 750 so that it divides exactly by 13?
  3. 3.Find the LCM of 21 and 6.
  4. 4.1/2 of 22 + 8 × 8 =
  5. 5.Three temple bells ring every 12, 5 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Find the HCF of 28 and 20.
  7. 7.What is the smallest number you must add to 968 so that it divides exactly by 6?
  8. 8.Find the LCM of 30 and 42.
  9. 9.Write 7/20 as a percent.
  10. 10.Divide ₹156 between Aarav and Zoya in the ratio 5 : 8. How much does Zoya get (in ₹)?
  11. 11.What is the smallest number you must add to 190 so that it divides exactly by 6?
  12. 12.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  13. 13.Find the LCM of 7, 10 and 2.
  14. 14.12 : 3 = 36 : ?
  15. 15.Write 3/4 as a percent.
  16. 16.4/8 × 2/3 =
  17. 17.What is the smallest number you must take away from 931 so that it divides exactly by 13?
  18. 18.If 3 notebooks cost ₹63, how much do 12 notebooks cost (in ₹)?
  19. 19.8 : 2 = 72 : ?
  20. 20.If 11 kites cost ₹286, how much do 15 kites cost (in ₹)?
  21. 21.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?
  22. 22.If 7 kg of rice costs ₹469, how many kg can you buy for ₹804?
  23. 23.What percent of 50 is 48?
  24. 24.Round 3300 to the nearest thousand.
  25. 25.The ratio of boys to girls in a class is 2 : 9. There are 16 boys. How many girls are there?
  26. 26.What percent of 50 is 28?
  27. 27.18 ÷ 2 × 2 + 10 =
  28. 28.2.96 + 4.6 =
  29. 29.4.9 × 8 =
  30. 30.Round 70.93 to one decimal place. =
  31. 31.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 9, 15 or 6.
  32. 32.Find the LCM of 6, 7 and 8.
  33. 33.Find the LCM of 7 and 9.
  34. 34.10% of a number is 10. What is the number?
  35. 35.9 ÷ 2 =
  36. 36.Which is closest to 1002 ÷ 21? (a) 25 (b) 50 (c) 500 (d) 100
  37. 37.Which is closest to 801 + 805 + 201? (a) 1900 (b) 2000 (c) 1700 (d) 1800
  38. 38.The ratio of boys to girls in a class is 8 : 5. There are 72 boys. How many girls are there?
  39. 39.A hall floor is 120 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.What is 15% of 560?

Answer key

  1. 13
  2. 9
  3. 42
  4. 75
  5. 60
  6. 4
  7. 4
  8. 210
  9. 35
  10. 96
  11. 2
  12. 200
  13. 70
  14. 9
  15. 75
  16. 1/3
  17. 8
  18. 252
  19. 18
  20. 390
  21. 90
  22. 12
  23. 96
  24. 3000
  25. 72
  26. 56
  27. 28
  28. 7.56
  29. 39.2
  30. 70.9
  31. 91
  32. 168
  33. 63
  34. 100
  35. 4.5
  36. 50
  37. 1800
  38. 45
  39. 6
  40. 84

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