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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 273 · 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. 1.2.2 × 8 =
  2. 2.Find the HCF of 40 and 72.
  3. 3.Write 7/10 as a percent.
  4. 4.If 3 pens cost ₹75, how much do 5 pens cost (in ₹)?
  5. 5.Meera takes 75 seconds and Farhan takes 30 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?
  6. 6.Three temple bells ring every 15, 9 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.What is 25% of 188?
  8. 8.Which of these numbers divides exactly by 8? (a) 6183 (b) 5528 (c) 9597 (d) 7495
  9. 9.Round 15.64 to one decimal place. =
  10. 10.(17 + 7) × 2 − 12 =
  11. 11.A hostel has enough food for 10 students for 27 days. How many days will the same food last for 5 students?
  12. 12.Find the LCM of 20 and 32.
  13. 13.What is the smallest number you must add to 922 so that it divides exactly by 6?
  14. 14.Find the LCM of 36 and 42.
  15. 15.If 2 kg of rice costs ₹138, how many kg can you buy for ₹552?
  16. 16.Find the HCF of 27 and 21.
  17. 17.7/9 of 81 + 3 × 5 =
  18. 18.Round 29.44 to one decimal place. =
  19. 19.Two tanks hold 120 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.Which is closest to 196 + 96 + 896? (a) 1100 (b) 1400 (c) 1200 (d) 1300
  21. 21.Three temple bells ring every 20, 15 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.1/3 + 7/12 =
  23. 23.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  24. 24.What is the smallest number you must take away from 673 so that it divides exactly by 9?
  25. 25.49.2 ÷ 6 =
  26. 26.How many factors does 100 have?
  27. 27.9/12 × 1/3 =
  28. 28.7/9 of 63 + 2 × 9 =
  29. 29.What percent of 20 is 2?
  30. 30.8 × (14 − 1) + 88 ÷ 8 =
  31. 31.12 ÷ 3 × 7 + 24 =
  32. 32.Which is closest to 603 × 31? (Round each number first.) (a) 1800 (b) 18000 (c) 36000 (d) 180000
  33. 33.How many factors does 71 have?
  34. 34.What is the smallest number you must take away from 837 so that it divides exactly by 12?
  35. 35.10% of a number is 45. What is the number?
  36. 36.5/11 + 1/10 =
  37. 37.40% of a number is 118. What is the number?
  38. 38.1/7 × 5/8 =
  39. 39.The ratio of boys to girls in a class is 2 : 3. There are 16 boys. How many girls are there?
  40. 40.A hostel has enough food for 7 students for 9 days. How many days will the same food last for 9 students?

Answer key

  1. 17.6
  2. 8
  3. 70
  4. 125
  5. 150
  6. 90
  7. 47
  8. 5528
  9. 15.6
  10. 36
  11. 54
  12. 160
  13. 2
  14. 252
  15. 8
  16. 3
  17. 78
  18. 29.4
  19. 30
  20. 1200
  21. 120
  22. 11/12
  23. 36
  24. 7
  25. 8.2
  26. 9
  27. 1/4
  28. 67
  29. 10
  30. 115
  31. 52
  32. 18000
  33. 2
  34. 9
  35. 450
  36. 61/110
  37. 295
  38. 5/56
  39. 24
  40. 7

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