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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 747 · 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 3 and 9 (that is, 3 : 9 = 9 : ?).
  2. 2.Find the LCM of 9 and 4.
  3. 3.Find the LCM of 7, 5 and 4.
  4. 4.Divide ₹20 between Kabir and Vivaan in the ratio 1 : 3. How much does Vivaan get (in ₹)?
  5. 5.What percent of 500 is 210?
  6. 6.Which of these numbers divides exactly by 11? (a) 8012 (b) 7896 (c) 5750 (d) 4125
  7. 7.Find the HCF of 30 and 50.
  8. 8.4 painters can paint a school in 7 days. How many days would 7 painters take, working at the same speed?
  9. 9.What is the smallest number you must take away from 553 so that it divides exactly by 6?
  10. 10.19 + 9 × 6 − 10 =
  11. 11.The ratio of boys to girls in a class is 9 : 4. There are 45 boys. How many girls are there?
  12. 12.What is the smallest number you must add to 476 so that it divides exactly by 11?
  13. 13.17 + 6 × 4 − 12 =
  14. 14.Find the HCF of 21 and 15.
  15. 15.What percent of 20 is 9?
  16. 16.5 : 2 = 30 : ?
  17. 17.Find the LCM of 5, 11 and 3.
  18. 18.What is 120% of 155?
  19. 19.What is 4/5 of 150 km?
  20. 20.If 11 bottles of juice cost ₹209, how much do 17 bottles of juice cost (in ₹)?
  21. 21.How many factors does 32 have?
  22. 22.Which of these numbers divides exactly by 11? (a) 8321 (b) 4198 (c) 3305 (d) 4488
  23. 23.Round 57634 to the nearest hundred.
  24. 24.3.8 × 9 =
  25. 25.2 × (26 − 9) + 55 ÷ 5 =
  26. 26.How many factors does 15 have?
  27. 27.If 5 kites cost ₹185, how much do 3 kites cost (in ₹)?
  28. 28.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 3, 8 or 12.
  29. 29.30 ÷ 3 × 3 + 1 =
  30. 30.The ratio of boys to girls in a class is 7 : 8. There are 14 boys. How many girls are there?
  31. 31.What is 1/2 of 26 kg?
  32. 32.40% of a number is 168. What is the number?
  33. 33.Which is closest to 501 + 604 + 700? (a) 2000 (b) 1800 (c) 1700 (d) 1900
  34. 34.What percent of 80 is 12?
  35. 35.1.3 × 2 =
  36. 36.1/7 of 84 + 7 × 7 =
  37. 37.5.8 × 8 =
  38. 38.If 8 kg of rice costs ₹312, how many kg can you buy for ₹507?
  39. 39.46 − 72 ÷ 8 × 5 =
  40. 40.9 : 10 = 81 : ?

Answer key

  1. 27
  2. 36
  3. 140
  4. 15
  5. 42
  6. 4125
  7. 10
  8. 4
  9. 1
  10. 63
  11. 20
  12. 8
  13. 29
  14. 3
  15. 45
  16. 12
  17. 165
  18. 186
  19. 120
  20. 323
  21. 6
  22. 4488
  23. 57600
  24. 34.2
  25. 45
  26. 4
  27. 111
  28. 26
  29. 31
  30. 16
  31. 13
  32. 420
  33. 1800
  34. 15
  35. 2.6
  36. 61
  37. 46.4
  38. 13
  39. 1
  40. 90

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