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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 142 · 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.Divide ₹120 between Vivaan and Dev in the ratio 7 : 1. How much does Vivaan get (in ₹)?
  2. 2.How many factors does 88 have?
  3. 3.55 ÷ 5 × 7 + 23 =
  4. 4.Write 3/10 as a percent.
  5. 5.Three temple bells ring every 4, 20 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Find the LCM of 9, 5 and 12.
  7. 7.Which is closest to 98 + 497 + 497? (a) 1300 (b) 1000 (c) 1200 (d) 1100
  8. 8.2.56 + 3.9 =
  9. 9.Divide ₹385 between Aditya and Ananya in the ratio 7 : 4. How much does Ananya get (in ₹)?
  10. 10.Three temple bells ring every 4, 30 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.Three temple bells ring every 8, 4 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.Find the LCM of 27 and 21.
  13. 13.Round 99.72 to one decimal place. =
  14. 14.2/5 + 3/6 =
  15. 15.What is the smallest number you must take away from 989 so that it divides exactly by 3?
  16. 16.Find the LCM of 36 and 8.
  17. 17.What is the smallest number you must add to 580 so that it divides exactly by 6?
  18. 18.Which is closest to 99 + 200 + 904? (a) 1300 (b) 1100 (c) 1200 (d) 1400
  19. 19.42 + 9 × 3 − 12 =
  20. 20.Two tanks hold 405 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.How many factors does 63 have?
  22. 22.What is 40% of 40?
  23. 23.7 : 10 = 28 : ?
  24. 24.What is the smallest number you must take away from 128 so that it divides exactly by 7?
  25. 25.What is the smallest number you must add to 979 so that it divides exactly by 6?
  26. 26.9.9 × 7 =
  27. 27.What is 50% of 470?
  28. 28.Which of these numbers divides exactly by 4? (a) 8737 (b) 2265 (c) 4473 (d) 8244
  29. 29.Which is closest to 902 + 795 + 99? (a) 2000 (b) 1900 (c) 1700 (d) 1800
  30. 30.28 + 12 × 3 − 15 =
  31. 31.6/9 × 5/8 =
  32. 32.What percent of 80 is 4?
  33. 33.Which is closest to 204 + 903 + 195? (a) 1200 (b) 1500 (c) 1300 (d) 1400
  34. 34.Find the LCM of 35 and 45.
  35. 35.5.9 × 8 =
  36. 36.If 2 kg of rice costs ₹80, how many kg can you buy for ₹440?
  37. 37.(19 + 19) × 9 − 1 =
  38. 38.The HCF of two numbers is 4 and their LCM is 140. One of the numbers is 28. What is the other number?
  39. 39.A hall floor is 240 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.30 − 72 ÷ 9 × 3 =

Answer key

  1. 105
  2. 8
  3. 100
  4. 30
  5. 60
  6. 180
  7. 1100
  8. 6.46
  9. 140
  10. 60
  11. 40
  12. 189
  13. 99.7
  14. 9/10
  15. 2
  16. 72
  17. 2
  18. 1200
  19. 57
  20. 45
  21. 6
  22. 16
  23. 40
  24. 2
  25. 5
  26. 69.3
  27. 235
  28. 8244
  29. 1800
  30. 49
  31. 5/12
  32. 5
  33. 1300
  34. 315
  35. 47.2
  36. 11
  37. 341
  38. 20
  39. 12
  40. 6

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