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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 232 · 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 HCF of two numbers is 6 and their LCM is 252. One of the numbers is 36. What is the other number?
  2. 2.35 + 9 × 5 − 12 =
  3. 3.6 : 8 = 12 : ?
  4. 4.What is the smallest number you must take away from 725 so that it divides exactly by 7?
  5. 5.2 × (20 − 2) + 20 ÷ 5 =
  6. 6.Divide ₹133 between Sneha and Aditya in the ratio 3 : 4. How much does Sneha get (in ₹)?
  7. 7.If 11 kites cost ₹143, how much do 8 kites cost (in ₹)?
  8. 8.18 + 9 × 9 − 10 =
  9. 9.Write 14/25 as a percent.
  10. 10.Round 10.34 to one decimal place. =
  11. 11.How many factors does 66 have?
  12. 12.The ratio of boys to girls in a class is 2 : 9. There are 16 boys. How many girls are there?
  13. 13.The HCF of two numbers is 3 and their LCM is 45. One of the numbers is 9. What is the other number?
  14. 14.What is the smallest number you must take away from 792 so that it divides exactly by 7?
  15. 15.Kavya scored 42 marks out of 50 in a test. What percentage did Kavya score?
  16. 16.Find the LCM of 7, 14 and 15.
  17. 17.Three temple bells ring every 9, 4 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.19.4 ÷ 2 =
  19. 19.(15 + 2) × 7 − 13 =
  20. 20.Three temple bells ring every 20, 30 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.30 − 18 ÷ 6 × 9 =
  22. 22.9 × (25 − 15) + 12 ÷ 4 =
  23. 23.4/7 × 1/4 =
  24. 24.35 + 8 × 3 − 19 =
  25. 25.What is 1/2 of 46 kg?
  26. 26.Find the LCM of 54 and 12.
  27. 27.3.15 + 8.7 =
  28. 28.Which is closest to 805 + 299 + 202? (a) 1200 (b) 1500 (c) 1400 (d) 1300
  29. 29.What is the smallest number you must add to 386 so that it divides exactly by 13?
  30. 30.(10 + 7) × 2 − 10 =
  31. 31.Which is closest to 199 × 52? (Round each number first.) (a) 1000 (b) 100000 (c) 20000 (d) 10000
  32. 32.Round 81.23 to one decimal place. =
  33. 33.Find the LCM of 12 and 30.
  34. 34.A hall floor is 200 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  35. 35.What is the smallest number you must take away from 220 so that it divides exactly by 13?
  36. 36.What percent of 250 is 45?
  37. 37.Round 2124 to the nearest hundred.
  38. 38.8.7 × 2 =
  39. 39.What is the smallest number you must take away from 323 so that it divides exactly by 11?
  40. 40.88 ÷ 8 × 3 + 5 =

Answer key

  1. 42
  2. 68
  3. 16
  4. 4
  5. 40
  6. 57
  7. 104
  8. 89
  9. 56
  10. 10.3
  11. 8
  12. 72
  13. 15
  14. 1
  15. 84
  16. 210
  17. 72
  18. 9.7
  19. 106
  20. 60
  21. 3
  22. 93
  23. 1/7
  24. 40
  25. 23
  26. 108
  27. 11.85
  28. 1300
  29. 4
  30. 24
  31. 10000
  32. 81.2
  33. 60
  34. 24
  35. 12
  36. 18
  37. 2100
  38. 17.4
  39. 4
  40. 38

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