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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 127 · 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.If 4 pens cost ₹136, how much do 7 pens cost (in ₹)?
  2. 2.A hostel has enough food for 4 students for 7 days. How many days will the same food last for 2 students?
  3. 3.Divide ₹81 between Kavya and Isha in the ratio 2 : 7. How much does Kavya get (in ₹)?
  4. 4.2/3 − 2/10 =
  5. 5.7/8 of 96 + 3 × 7 =
  6. 6.What is the smallest number you must take away from 592 so that it divides exactly by 9?
  7. 7.What percent of 40 is 12?
  8. 8.57 ÷ 6 =
  9. 9.2 : 5 = 18 : ?
  10. 10.1/3 of 12 + 6 × 7 =
  11. 11.What is the smallest number you must take away from 515 so that it divides exactly by 12?
  12. 12.Find the LCM of 20 and 45.
  13. 13.Round 49729 to the nearest hundred.
  14. 14.7 painters can paint a school in 24 days. How many days would 21 painters take, working at the same speed?
  15. 15.If 3 kg of rice costs ₹246, how many kg can you buy for ₹1230?
  16. 16.6 ÷ 3 × 2 + 30 =
  17. 17.Which of these numbers divides exactly by 6? (a) 7903 (b) 1006 (c) 6188 (d) 1320
  18. 18.Write 12/25 as a percent.
  19. 19.Round 58.71 to one decimal place. =
  20. 20.How many factors does 63 have?
  21. 21.If 4 kg of rice costs ₹288, how many kg can you buy for ₹504?
  22. 22.Find the HCF of 16 and 20.
  23. 23.Which of these numbers divides exactly by 3? (a) 3173 (b) 1060 (c) 8545 (d) 8649
  24. 24.A hostel has enough food for 10 students for 6 days. How many days will the same food last for 2 students?
  25. 25.The ratio of boys to girls in a class is 9 : 7. There are 36 boys. How many girls are there?
  26. 26.If 10 cricket balls cost ₹180, how much do 6 cricket balls cost (in ₹)?
  27. 27.Which is closest to 4504 ÷ 49? (a) 180 (b) 900 (c) 45 (d) 90
  28. 28.Three temple bells ring every 5, 24 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.Find the LCM of 2, 14 and 4.
  30. 30.What is 3/4 of 16 students?
  31. 31.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  32. 32.What is the smallest number you must take away from 743 so that it divides exactly by 11?
  33. 33.Round 53748 to the nearest thousand.
  34. 34.Tara takes 60 seconds and Aarav takes 90 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?
  35. 35.Find the LCM of 45 and 25.
  36. 36.Which is closest to 593 ÷ 21? (a) 300 (b) 15 (c) 30 (d) 60
  37. 37.7.67 + 5.3 =
  38. 38.Two tanks hold 60 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  39. 39.Write 17/20 as a percent.
  40. 40.9.3 × 5 =

Answer key

  1. 238
  2. 14
  3. 18
  4. 7/15
  5. 105
  6. 7
  7. 30
  8. 9.5
  9. 45
  10. 46
  11. 11
  12. 180
  13. 49700
  14. 8
  15. 15
  16. 34
  17. 1320
  18. 48
  19. 58.7
  20. 6
  21. 7
  22. 4
  23. 8649
  24. 30
  25. 28
  26. 108
  27. 90
  28. 120
  29. 28
  30. 12
  31. 81
  32. 6
  33. 54000
  34. 180
  35. 225
  36. 30
  37. 12.97
  38. 15
  39. 85
  40. 46.5

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