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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 578 · 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. 1.6.9 × 4 =
  2. 2.A car goes 76 km on 4 litres of petrol. How far can it go on 6 litres (in km)?
  3. 3.Three temple bells ring every 15, 5 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 12, 15 or 3.
  5. 5.What is the smallest number you must take away from 226 so that it divides exactly by 12?
  6. 6.9 : 10 = 72 : ?
  7. 7.What is the smallest number you must add to 610 so that it divides exactly by 8?
  8. 8.How many factors does 71 have?
  9. 9.Which of these numbers divides exactly by 8? (a) 4796 (b) 9232 (c) 1557 (d) 5770
  10. 10.What is 75% of 200?
  11. 11.Find the HCF of 20 and 70.
  12. 12.Round 18.87 to one decimal place. =
  13. 13.2/3 × 6/12 =
  14. 14.What is 7/9 of 63 students?
  15. 15.Two tanks hold 20 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.3/5 + 5/7 =
  17. 17.Write 3/5 as a percent.
  18. 18.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  19. 19.Which is closest to 399 × 88? (Round each number first.) (a) 360000 (b) 72000 (c) 36000 (d) 3600
  20. 20.How many factors does 81 have?
  21. 21.Write 33/50 as a percent.
  22. 22.(18 + 20) × 2 − 24 =
  23. 23.If 5 kg of rice costs ₹355, how many kg can you buy for ₹639?
  24. 24.Which is closest to 3503 ÷ 49? (a) 70 (b) 140 (c) 35 (d) 700
  25. 25.What is the smallest number you must add to 790 so that it divides exactly by 13?
  26. 26.Sneha scored 22 marks out of 40 in a test. What percentage did Sneha score?
  27. 27.Round 36.94 to one decimal place. =
  28. 28.How many factors does 63 have?
  29. 29.A hostel has enough food for 11 students for 5 days. How many days will the same food last for 5 students?
  30. 30.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  31. 31.Write 1/5 as a percent.
  32. 32.What is the smallest number you must add to 161 so that it divides exactly by 12?
  33. 33.Find the HCF of 36 and 60.
  34. 34.Which of these numbers divides exactly by 6? (a) 3512 (b) 3591 (c) 8001 (d) 6720
  35. 35.Two tanks hold 180 litres and 405 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.57 − 35 ÷ 5 × 4 =
  37. 37.Saanvi takes 60 seconds and Diya 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?
  38. 38.What is the smallest number you must add to 843 so that it divides exactly by 9?
  39. 39.What is the smallest number you must add to 657 so that it divides exactly by 6?
  40. 40.Three temple bells ring every 18, 30 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 27.6
  2. 114
  3. 45
  4. 61
  5. 10
  6. 80
  7. 6
  8. 2
  9. 9232
  10. 150
  11. 10
  12. 18.9
  13. 1/3
  14. 49
  15. 5
  16. 46/35
  17. 60
  18. 45
  19. 36000
  20. 5
  21. 66
  22. 52
  23. 9
  24. 70
  25. 3
  26. 55
  27. 36.9
  28. 6
  29. 11
  30. 63
  31. 20
  32. 7
  33. 12
  34. 6720
  35. 45
  36. 29
  37. 180
  38. 3
  39. 3
  40. 90

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