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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 159 · 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 third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  2. 2.The HCF of two numbers is 8 and their LCM is 168. One of the numbers is 56. What is the other number?
  3. 3.Which of these numbers divides exactly by 11? (a) 7986 (b) 9478 (c) 1010 (d) 8131
  4. 4.Find the LCM of 4, 14 and 7.
  5. 5.4.66 + 9.1 =
  6. 6.Which is closest to 596 + 403 + 505? (a) 1500 (b) 1700 (c) 1400 (d) 1600
  7. 7.How many factors does 22 have?
  8. 8.Three temple bells ring every 6, 8 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.How many factors does 34 have?
  10. 10.Arjun takes 60 seconds and Diya takes 48 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?
  11. 11.Which is closest to 1491 ÷ 49? (a) 30 (b) 60 (c) 300 (d) 15
  12. 12.2/11 + 1/2 =
  13. 13.3/8 of 24 + 9 × 8 =
  14. 14.(16 + 3) × 7 − 7 =
  15. 15.7 : 14 = 14 : ?
  16. 16.The HCF of two numbers is 3 and their LCM is 54. One of the numbers is 27. What is the other number?
  17. 17.Three temple bells ring every 20, 4 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.What is the smallest number you must take away from 950 so that it divides exactly by 6?
  19. 19.What percent of 200 is 134?
  20. 20.Pooja takes 45 seconds and Diya takes 50 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?
  21. 21.9/12 − 1/11 =
  22. 22.What is the smallest number you must add to 855 so that it divides exactly by 12?
  23. 23.The HCF of two numbers is 8 and their LCM is 504. One of the numbers is 72. What is the other number?
  24. 24.What is 50% of 254?
  25. 25.What is 2/3 of ₹72?
  26. 26.9/10 − 1/7 =
  27. 27.What is the smallest number you must take away from 658 so that it divides exactly by 13?
  28. 28.Find the LCM of 5, 4 and 9.
  29. 29.Three temple bells ring every 8, 12 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.32 + 5 × 11 − 15 =
  31. 31.Two tanks hold 450 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.The HCF of two numbers is 9 and their LCM is 126. One of the numbers is 63. What is the other number?
  33. 33.The ratio of boys to girls in a class is 9 : 8. There are 81 boys. How many girls are there?
  34. 34.Two tanks hold 90 litres and 315 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.Find the LCM of 21 and 12.
  36. 36.A car goes 96 km on 8 litres of petrol. How far can it go on 26 litres (in km)?
  37. 37.Find the LCM of 4, 14 and 8.
  38. 38.26 − 15 ÷ 5 × 6 =
  39. 39.Find the LCM of 8, 6 and 3.
  40. 40.Three temple bells ring every 12, 4 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 96
  2. 24
  3. 7986
  4. 28
  5. 13.76
  6. 1500
  7. 4
  8. 72
  9. 4
  10. 240
  11. 30
  12. 15/22
  13. 81
  14. 126
  15. 28
  16. 6
  17. 60
  18. 2
  19. 67
  20. 450
  21. 29/44
  22. 9
  23. 56
  24. 127
  25. 48
  26. 53/70
  27. 8
  28. 180
  29. 120
  30. 72
  31. 50
  32. 18
  33. 72
  34. 45
  35. 84
  36. 312
  37. 56
  38. 8
  39. 24
  40. 36

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