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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 699 · 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.The ratio of boys to girls in a class is 9 : 8. There are 36 boys. How many girls are there?
  2. 2.1/4 + 5/6 =
  3. 3.3 : 6 = 12 : ?
  4. 4.Round 59368 to the nearest thousand.
  5. 5.If 3 kg of rice costs ₹219, how many kg can you buy for ₹657?
  6. 6.The HCF of two numbers is 8 and their LCM is 120. One of the numbers is 40. What is the other number?
  7. 7.How many factors does 51 have?
  8. 8.What percent of 40 is 20?
  9. 9.A car goes 26 km on 2 litres of petrol. How far can it go on 4 litres (in km)?
  10. 10.Find the LCM of 14, 12 and 7.
  11. 11.A hostel has enough food for 3 students for 19 days. How many days will the same food last for 19 students?
  12. 12.Which is closest to 901 + 601 + 505? (a) 2000 (b) 1900 (c) 2100 (d) 2200
  13. 13.What is the smallest number you must add to 183 so that it divides exactly by 4?
  14. 14.Find the LCM of 12 and 27.
  15. 15.What is the smallest number you must take away from 250 so that it divides exactly by 13?
  16. 16.A hostel has enough food for 3 students for 6 days. How many days will the same food last for 6 students?
  17. 17.What is 3/5 of 120 km?
  18. 18.Three temple bells ring every 15, 5 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  20. 20.(14 + 12) × 7 − 19 =
  21. 21.A car goes 63 km on 7 litres of petrol. How far can it go on 26 litres (in km)?
  22. 22.Write 1/2 as a percent.
  23. 23.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 4, 3 or 9.
  24. 24.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 4 or 6.
  25. 25.3 : 5 = 12 : ?
  26. 26.Which is closest to 903 × 32? (Round each number first.) (a) 54000 (b) 270000 (c) 2700 (d) 27000
  27. 27.Two tanks hold 90 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  28. 28.Find the HCF of 64 and 56.
  29. 29.The HCF of two numbers is 5 and their LCM is 315. One of the numbers is 45. What is the other number?
  30. 30.Round 94.28 to one decimal place. =
  31. 31.What is the smallest number you must take away from 654 so that it divides exactly by 8?
  32. 32.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 12, 6 or 10.
  33. 33.Three temple bells ring every 15, 6 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.How many factors does 86 have?
  35. 35.If 2 kg of rice costs ₹170, how many kg can you buy for ₹1020?
  36. 36.15% of a number is 51. What is the number?
  37. 37.What is the smallest number you must add to 433 so that it divides exactly by 3?
  38. 38.12% of a number is 21. What is the number?
  39. 39.4 × (11 − 4) + 18 ÷ 2 =
  40. 40.Find the HCF of 120 and 75.

Answer key

  1. 32
  2. 13/12
  3. 24
  4. 59000
  5. 9
  6. 24
  7. 4
  8. 50
  9. 52
  10. 84
  11. 3
  12. 2000
  13. 1
  14. 108
  15. 3
  16. 3
  17. 72
  18. 60
  19. 27
  20. 163
  21. 234
  22. 50
  23. 37
  24. 61
  25. 20
  26. 27000
  27. 10
  28. 8
  29. 35
  30. 94.3
  31. 6
  32. 61
  33. 60
  34. 4
  35. 12
  36. 340
  37. 2
  38. 175
  39. 37
  40. 15

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