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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 324 · 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.Find the LCM of 42 and 12.
  2. 2.3/4 of 36 + 4 × 8 =
  3. 3.If 4 kg of rice costs ₹344, how many kg can you buy for ₹1118?
  4. 4.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 5, 12 or 4.
  5. 5.Three temple bells ring every 9, 30 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.40% of a number is 6. What is the number?
  7. 7.A car goes 20 km on 2 litres of petrol. How far can it go on 29 litres (in km)?
  8. 8.6.14 + 1.4 =
  9. 9.(18 + 3) × 4 − 17 =
  10. 10.Find the LCM of 12 and 32.
  11. 11.38 ÷ 5 =
  12. 12.What is the smallest number you must add to 157 so that it divides exactly by 12?
  13. 13.What is the smallest number you must take away from 856 so that it divides exactly by 12?
  14. 14.3 : 7 = 12 : ?
  15. 15.Three temple bells ring every 8, 20 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.Which is closest to 997 ÷ 21? (a) 25 (b) 500 (c) 100 (d) 50
  17. 17.Find the HCF of 77 and 44.
  18. 18.5% of a number is 24. What is the number?
  19. 19.Which is closest to 102 + 102 + 801? (a) 1000 (b) 1200 (c) 1100 (d) 900
  20. 20.Isha scored 20 marks out of 50 in a test. What percentage did Isha score?
  21. 21.(12 + 8) × 6 − 1 =
  22. 22.5 × (22 − 14) + 36 ÷ 6 =
  23. 23.How many factors does 29 have?
  24. 24.14.4 ÷ 6 =
  25. 25.Find the LCM of 28 and 36.
  26. 26.Round 43.33 to one decimal place. =
  27. 27.(15 + 3) × 6 − 22 =
  28. 28.What is the smallest number you must take away from 130 so that it divides exactly by 12?
  29. 29.Find the LCM of 12 and 14.
  30. 30.How many factors does 18 have?
  31. 31.11 : 6 = 99 : ?
  32. 32.A hall floor is 315 cm long and 270 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.What is 10% of 590?
  34. 34.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  35. 35.Diya scored 19 marks out of 20 in a test. What percentage did Diya score?
  36. 36.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.The HCF of two numbers is 3 and their LCM is 216. One of the numbers is 24. What is the other number?
  38. 38.3/5 + 8/12 =
  39. 39.Find the LCM of 3, 5 and 15.
  40. 40.Find the HCF of 15 and 9.

Answer key

  1. 84
  2. 59
  3. 13
  4. 61
  5. 90
  6. 15
  7. 290
  8. 7.54
  9. 67
  10. 96
  11. 7.6
  12. 11
  13. 4
  14. 28
  15. 120
  16. 50
  17. 11
  18. 480
  19. 1000
  20. 40
  21. 119
  22. 46
  23. 2
  24. 2.4
  25. 252
  26. 43.3
  27. 86
  28. 10
  29. 84
  30. 6
  31. 54
  32. 42
  33. 59
  34. 18
  35. 95
  36. 20
  37. 27
  38. 19/15
  39. 15
  40. 3

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