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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 746 · 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. 1.3/6 − 3/9 =
  2. 2.Three temple bells ring every 10, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.Find the LCM of 4, 10 and 9.
  4. 4.Two tanks hold 45 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.The HCF of two numbers is 8 and their LCM is 168. One of the numbers is 24. What is the other number?
  6. 6.The HCF of two numbers is 2 and their LCM is 70. One of the numbers is 14. What is the other number?
  7. 7.The HCF of two numbers is 2 and their LCM is 56. One of the numbers is 14. What is the other number?
  8. 8.Find the LCM of 24 and 27.
  9. 9.1/10 + 3/11 =
  10. 10.(19 + 8) × 4 − 28 =
  11. 11.10% of a number is 24. What is the number?
  12. 12.Two tanks hold 15 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.Round 16674 to the nearest ten.
  14. 14.58.5 ÷ 9 =
  15. 15.1/5 + 3/10 =
  16. 16.Which of these numbers divides exactly by 11? (a) 6420 (b) 8818 (c) 3834 (d) 1760
  17. 17.What percent of 250 is 245?
  18. 18.1/2 of 6 + 2 × 8 =
  19. 19.Which is closest to 898 × 58? (Round each number first.) (a) 540000 (b) 108000 (c) 54000 (d) 5400
  20. 20.6/10 − 1/3 =
  21. 21.Which of these numbers divides exactly by 6? (a) 5388 (b) 1597 (c) 4903 (d) 6289
  22. 22.48 + 5 × 9 − 12 =
  23. 23.4/12 + 1/2 =
  24. 24.What is 15% of 80?
  25. 25.Arjun takes 80 seconds and Manav takes 36 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?
  26. 26.Find the LCM of 6, 4 and 12.
  27. 27.Find the HCF of 49 and 63.
  28. 28.Find the LCM of 10, 11 and 2.
  29. 29.Which of these numbers divides exactly by 11? (a) 1167 (b) 6378 (c) 3993 (d) 7235
  30. 30.39.6 ÷ 9 =
  31. 31.23 − 16 ÷ 8 × 2 =
  32. 32.3/12 + 10/11 =
  33. 33.Which is closest to 604 × 28? (Round each number first.) (a) 1800 (b) 180000 (c) 18000 (d) 36000
  34. 34.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  35. 35.If 12 kites cost ₹276, how much do 15 kites cost (in ₹)?
  36. 36.Which is closest to 2008 ÷ 49? (a) 80 (b) 40 (c) 20 (d) 400
  37. 37.22 + 2 × 12 − 19 =
  38. 38.What is the smallest number you must take away from 957 so that it divides exactly by 7?
  39. 39.If 8 kg of rice costs ₹320, how many kg can you buy for ₹240?
  40. 40.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 32. What is the other number?

Answer key

  1. 1/6
  2. 60
  3. 180
  4. 15
  5. 56
  6. 10
  7. 8
  8. 216
  9. 41/110
  10. 80
  11. 240
  12. 5
  13. 16670
  14. 6.5
  15. 1/2
  16. 1760
  17. 98
  18. 19
  19. 54000
  20. 4/15
  21. 5388
  22. 81
  23. 5/6
  24. 12
  25. 720
  26. 12
  27. 7
  28. 110
  29. 3993
  30. 4.4
  31. 19
  32. 51/44
  33. 18000
  34. 54
  35. 345
  36. 40
  37. 27
  38. 5
  39. 6
  40. 36

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