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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 249 · 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. 1.32 − 14 ÷ 7 × 9 =
  2. 2.What is 50% of 140?
  3. 3.2/3 + 3/10 =
  4. 4.How many factors does 12 have?
  5. 5.What is 30% of 570?
  6. 6.What percent of 80 is 4?
  7. 7.1.9 × 8 =
  8. 8.Which is closest to 499 × 32? (Round each number first.) (a) 30000 (b) 1500 (c) 150000 (d) 15000
  9. 9.60% of a number is 42. What is the number?
  10. 10.Find the LCM of 2, 14 and 3.
  11. 11.If 6 kg of rice costs ₹522, how many kg can you buy for ₹957?
  12. 12.Kabir takes 30 seconds and Arjun takes 36 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?
  13. 13.Two tanks hold 80 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  14. 14.The HCF of two numbers is 6 and their LCM is 180. One of the numbers is 30. What is the other number?
  15. 15.(7 + 2) × 6 − 15 =
  16. 16.8 × (13 − 2) + 21 ÷ 7 =
  17. 17.10 : 15 = 50 : ?
  18. 18.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  19. 19.Which is closest to 1593 ÷ 41? (a) 80 (b) 40 (c) 400 (d) 20
  20. 20.Three temple bells ring every 8, 30 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.6/10 − 4/8 =
  22. 22.What is 10% of 90?
  23. 23.Find the LCM of 6 and 8.
  24. 24.Find the LCM of 2, 12 and 3.
  25. 25.58.4 ÷ 8 =
  26. 26.Find the LCM of 9, 5 and 2.
  27. 27.5% of a number is 25. What is the number?
  28. 28.Find the LCM of 6, 3 and 14.
  29. 29.2/4 × 10/12 =
  30. 30.(15 + 17) × 3 − 29 =
  31. 31.8/9 − 2/10 =
  32. 32.The ratio of boys to girls in a class is 2 : 9. There are 6 boys. How many girls are there?
  33. 33.Find the HCF of 40 and 70.
  34. 34.Which is closest to 800 + 401 + 298? (a) 1400 (b) 1500 (c) 1600 (d) 1700
  35. 35.4.8 × 8 =
  36. 36.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 5, 12 or 4.
  37. 37.Find the smallest number bigger than 6 that leaves a remainder of 2 when divided by 3, 5 or 6.
  38. 38.Find the HCF of 135 and 30.
  39. 39.7 : 5 = 35 : ?
  40. 40.Find the HCF of 12 and 14.

Answer key

  1. 14
  2. 70
  3. 29/30
  4. 6
  5. 171
  6. 5
  7. 15.2
  8. 15000
  9. 70
  10. 42
  11. 11
  12. 180
  13. 10
  14. 36
  15. 39
  16. 91
  17. 75
  18. 144
  19. 40
  20. 120
  21. 1/10
  22. 9
  23. 24
  24. 12
  25. 7.3
  26. 90
  27. 500
  28. 42
  29. 5/12
  30. 67
  31. 31/45
  32. 27
  33. 10
  34. 1500
  35. 38.4
  36. 62
  37. 32
  38. 15
  39. 25
  40. 2

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