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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 227 · 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. 1.11 : 7 = 77 : ?
  2. 2.What is the smallest number you must take away from 670 so that it divides exactly by 13?
  3. 3.3/8 − 3/9 =
  4. 4.Round 72223 to the nearest hundred.
  5. 5.Find the LCM of 36 and 8.
  6. 6.15% of a number is 27. What is the number?
  7. 7.Round 64.59 to one decimal place. =
  8. 8.If 7 kg of rice costs ₹455, how many kg can you buy for ₹780?
  9. 9.Divide ₹264 between Kavya and Dev in the ratio 6 : 5. How much does Dev get (in ₹)?
  10. 10.9.69 + 8.7 =
  11. 11.Find the HCF of 42 and 70.
  12. 12.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 18. What is the other number?
  13. 13.If 7 kg of rice costs ₹441, how many kg can you buy for ₹315?
  14. 14.Which is closest to 2491 ÷ 51? (a) 500 (b) 100 (c) 25 (d) 50
  15. 15.What is the smallest number you must add to 826 so that it divides exactly by 12?
  16. 16.Find the HCF of 33 and 77.
  17. 17.The HCF of two numbers is 9 and their LCM is 504. One of the numbers is 72. What is the other number?
  18. 18.Divide ₹550 between Karan and Farhan in the ratio 3 : 8. How much does Farhan get (in ₹)?
  19. 19.1/2 of 6 + 6 × 2 =
  20. 20.4/7 + 9/10 =
  21. 21.8.5 × 3 =
  22. 22.What is the smallest number you must take away from 512 so that it divides exactly by 11?
  23. 23.5% of a number is 29. What is the number?
  24. 24.Find the HCF of 6 and 15.
  25. 25.What is the smallest number you must take away from 640 so that it divides exactly by 3?
  26. 26.6/9 + 2/8 =
  27. 27.Round 82.84 to one decimal place. =
  28. 28.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  29. 29.The HCF of two numbers is 6 and their LCM is 120. One of the numbers is 30. What is the other number?
  30. 30.4 : 3 = 28 : ?
  31. 31.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  32. 32.The HCF of two numbers is 8 and their LCM is 144. One of the numbers is 16. What is the other number?
  33. 33.30.4 ÷ 4 =
  34. 34.Write 3/25 as a percent.
  35. 35.Which of these numbers divides exactly by 9? (a) 2115 (b) 3804 (c) 8287 (d) 4237
  36. 36.What is the smallest number you must take away from 419 so that it divides exactly by 9?
  37. 37.116 − 18 ÷ 2 × 9 =
  38. 38.The ratio of boys to girls in a class is 8 : 5. There are 64 boys. How many girls are there?
  39. 39.Which of these numbers divides exactly by 8? (a) 7810 (b) 8648 (c) 9633 (d) 1508
  40. 40.Find the LCM of 15, 5 and 10.

Answer key

  1. 49
  2. 7
  3. 1/24
  4. 72200
  5. 72
  6. 180
  7. 64.6
  8. 12
  9. 120
  10. 18.39
  11. 14
  12. 27
  13. 5
  14. 50
  15. 2
  16. 11
  17. 63
  18. 400
  19. 15
  20. 103/70
  21. 25.5
  22. 6
  23. 580
  24. 3
  25. 1
  26. 11/12
  27. 82.8
  28. 36
  29. 24
  30. 21
  31. 21
  32. 72
  33. 7.6
  34. 12
  35. 2115
  36. 5
  37. 35
  38. 40
  39. 8648
  40. 30

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