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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 827 · 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 LCM of 15, 5 and 3.
  2. 2.How many factors does 71 have?
  3. 3.7.84 + 2.8 =
  4. 4.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  5. 5.10 painters can paint a school in 30 days. How many days would 12 painters take, working at the same speed?
  6. 6.6.71 + 8.1 =
  7. 7.Ishaan scored 28 marks out of 50 in a test. What percentage did Ishaan score?
  8. 8.1.03 + 4.9 =
  9. 9.1/4 of 12 + 2 × 9 =
  10. 10.120% of a number is 264. What is the number?
  11. 11.What is 80% of 410?
  12. 12.Divide ₹168 between Pooja and Zoya in the ratio 3 : 4. How much does Zoya get (in ₹)?
  13. 13.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  14. 14.Two tanks hold 100 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.Find the LCM of 13, 3 and 5.
  16. 16.Find the LCM of 9, 12 and 5.
  17. 17.Write 3/5 as a percent.
  18. 18.Round 55467 to the nearest hundred.
  19. 19.2/11 × 1/4 =
  20. 20.The ratio of boys to girls in a class is 1 : 6. There are 10 boys. How many girls are there?
  21. 21.Which of these numbers divides exactly by 6? (a) 8285 (b) 8220 (c) 3777 (d) 9467
  22. 22.Rohan takes 60 seconds and Karan 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?
  23. 23.Find the LCM of 36 and 20.
  24. 24.10.4 ÷ 8 =
  25. 25.The ratio of boys to girls in a class is 9 : 2. There are 36 boys. How many girls are there?
  26. 26.32 ÷ 4 × 7 + 2 =
  27. 27.Round 56006 to the nearest ten.
  28. 28.Which is closest to 607 ÷ 29? (a) 40 (b) 200 (c) 10 (d) 20
  29. 29.Which is closest to 797 × 41? (Round each number first.) (a) 320000 (b) 3200 (c) 32000 (d) 64000
  30. 30.58 − 54 ÷ 9 × 5 =
  31. 31.24 ÷ 4 × 9 + 24 =
  32. 32.Divide ₹84 between Kabir and Aarav in the ratio 2 : 5. How much does Kabir get (in ₹)?
  33. 33.7 : 11 = 56 : ?
  34. 34.2 : 5 = 4 : ?
  35. 35.Three temple bells ring every 8, 15 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.The HCF of two numbers is 7 and their LCM is 196. One of the numbers is 49. What is the other number?
  37. 37.What is the smallest number you must take away from 612 so that it divides exactly by 8?
  38. 38.Three temple bells ring every 12, 18 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.Find the LCM of 6, 12 and 8.
  40. 40.4/11 + 1/4 =

Answer key

  1. 15
  2. 2
  3. 10.64
  4. 24
  5. 25
  6. 14.81
  7. 56
  8. 5.93
  9. 21
  10. 220
  11. 328
  12. 96
  13. 81
  14. 20
  15. 195
  16. 180
  17. 60
  18. 55500
  19. 1/22
  20. 60
  21. 8220
  22. 180
  23. 180
  24. 1.3
  25. 8
  26. 58
  27. 56010
  28. 20
  29. 32000
  30. 28
  31. 78
  32. 24
  33. 88
  34. 10
  35. 120
  36. 28
  37. 4
  38. 72
  39. 24
  40. 27/44

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