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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 897 · 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. 1.10 : 9 = 30 : ?
  2. 2.Arjun takes 30 seconds and Farhan takes 54 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?
  3. 3.What is 3/10 of 80 students?
  4. 4.Which is closest to 598 ÷ 19? (a) 15 (b) 300 (c) 30 (d) 60
  5. 5.Which of these numbers divides exactly by 9? (a) 8184 (b) 4374 (c) 1932 (d) 9780
  6. 6.How many factors does 97 have?
  7. 7.The HCF of two numbers is 5 and their LCM is 60. One of the numbers is 15. What is the other number?
  8. 8.7.95 + 9.6 =
  9. 9.6/8 − 1/2 =
  10. 10.10 : 15 = 40 : ?
  11. 11.49 + 11 × 4 − 36 =
  12. 12.33 + 8 × 11 − 12 =
  13. 13.The ratio of boys to girls in a class is 7 : 4. There are 14 boys. How many girls are there?
  14. 14.Find the smallest number bigger than 15 that leaves a remainder of 8 when divided by 12, 9 or 15.
  15. 15.Find the LCM of 28 and 12.
  16. 16.What percent of 400 is 216?
  17. 17.How many factors does 25 have?
  18. 18.Which is closest to 396 ÷ 21? (a) 10 (b) 20 (c) 40 (d) 200
  19. 19.If 4 kg of rice costs ₹276, how many kg can you buy for ₹345?
  20. 20.40% of a number is 134. What is the number?
  21. 21.Divide ₹756 between Meera and Tara in the ratio 5 : 9. How much does Meera get (in ₹)?
  22. 22.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  23. 23.Which is closest to 1500 ÷ 49? (a) 60 (b) 30 (c) 300 (d) 15
  24. 24.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  25. 25.Which is closest to 797 × 39? (Round each number first.) (a) 64000 (b) 32000 (c) 3200 (d) 320000
  26. 26.8 × (22 − 17) + 72 ÷ 6 =
  27. 27.Find the HCF of 64 and 56.
  28. 28.2.61 + 5.3 =
  29. 29.Three temple bells ring every 8, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.Find the HCF of 42 and 54.
  31. 31.47 − 14 ÷ 7 × 4 =
  32. 32.Which of these numbers divides exactly by 11? (a) 4944 (b) 6908 (c) 8523 (d) 4542
  33. 33.3/4 − 5/7 =
  34. 34.45 + 4 × 6 − 17 =
  35. 35.What is 40% of 70?
  36. 36.What is 25% of 136?
  37. 37.Two tanks hold 120 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  38. 38.Which of these numbers divides exactly by 11? (a) 8547 (b) 4753 (c) 9499 (d) 5598
  39. 39.What percent of 40 is 38?
  40. 40.The HCF of two numbers is 5 and their LCM is 30. One of the numbers is 15. What is the other number?

Answer key

  1. 27
  2. 270
  3. 24
  4. 30
  5. 4374
  6. 2
  7. 20
  8. 17.55
  9. 1/4
  10. 60
  11. 57
  12. 109
  13. 8
  14. 188
  15. 84
  16. 54
  17. 3
  18. 20
  19. 5
  20. 335
  21. 270
  22. 50
  23. 30
  24. 20
  25. 32000
  26. 52
  27. 8
  28. 7.91
  29. 24
  30. 6
  31. 39
  32. 6908
  33. 1/28
  34. 52
  35. 28
  36. 34
  37. 15
  38. 8547
  39. 95
  40. 10

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