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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 105 · 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.Which is closest to 201 + 199 + 696? (a) 1200 (b) 1000 (c) 1300 (d) 1100
  2. 2.The ratio of boys to girls in a class is 7 : 9. There are 49 boys. How many girls are there?
  3. 3.Find the LCM of 8 and 6.
  4. 4.10 : 14 = 20 : ?
  5. 5.The HCF of two numbers is 4 and their LCM is 84. One of the numbers is 28. What is the other number?
  6. 6.What is 80% of 20?
  7. 7.What is the smallest number you must add to 184 so that it divides exactly by 6?
  8. 8.4 painters can paint a school in 4 days. How many days would 2 painters take, working at the same speed?
  9. 9.40 + 7 × 9 − 14 =
  10. 10.Round 88008 to the nearest ten.
  11. 11.If 9 kg of rice costs ₹324, how many kg can you buy for ₹504?
  12. 12.Find the LCM of 40 and 25.
  13. 13.Round 51767 to the nearest ten.
  14. 14.The ratio of boys to girls in a class is 2 : 9. There are 6 boys. How many girls are there?
  15. 15.Three temple bells ring every 4, 18 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.12% of a number is 69. What is the number?
  17. 17.What is 1/3 of 48 km?
  18. 18.Find the HCF of 10 and 18.
  19. 19.48 + 7 × 5 − 45 =
  20. 20.A hall floor is 150 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  21. 21.What is 1/3 of 30 litres?
  22. 22.The ratio of boys to girls in a class is 3 : 1. There are 21 boys. How many girls are there?
  23. 23.Three temple bells ring every 4, 18 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Which is closest to 396 × 90? (Round each number first.) (a) 72000 (b) 36000 (c) 3600 (d) 360000
  25. 25.Write 4/5 as a percent.
  26. 26.A hall floor is 280 cm long and 160 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.Which of these numbers divides exactly by 9? (a) 3600 (b) 8843 (c) 1545 (d) 1099
  28. 28.9.36 + 1.2 =
  29. 29.97 − 54 ÷ 6 × 7 =
  30. 30.What is the smallest number you must take away from 974 so that it divides exactly by 13?
  31. 31.If 4 kg of rice costs ₹344, how many kg can you buy for ₹516?
  32. 32.2 : 8 = 4 : ?
  33. 33.9.8 ÷ 7 =
  34. 34.21 − 12 ÷ 3 × 5 =
  35. 35.If 5 kg of rice costs ₹335, how many kg can you buy for ₹201?
  36. 36.What is 80% of 365?
  37. 37.Round 77.44 to one decimal place. =
  38. 38.Which is closest to 297 + 495 + 595? (a) 1300 (b) 1400 (c) 1500 (d) 1600
  39. 39.Find the HCF of 24 and 15.
  40. 40.(13 + 9) × 4 − 28 =

Answer key

  1. 1100
  2. 63
  3. 24
  4. 28
  5. 12
  6. 16
  7. 2
  8. 8
  9. 89
  10. 88010
  11. 14
  12. 200
  13. 51770
  14. 27
  15. 36
  16. 575
  17. 16
  18. 2
  19. 38
  20. 6
  21. 10
  22. 7
  23. 72
  24. 36000
  25. 80
  26. 28
  27. 3600
  28. 10.56
  29. 34
  30. 12
  31. 6
  32. 16
  33. 1.4
  34. 1
  35. 3
  36. 292
  37. 77.4
  38. 1400
  39. 3
  40. 60

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