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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 349 · 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 40 and 15.
  2. 2.Round 50.68 to one decimal place. =
  3. 3.Which is closest to 1499 ÷ 31? (a) 50 (b) 500 (c) 25 (d) 100
  4. 4.What is the smallest number you must take away from 296 so that it divides exactly by 13?
  5. 5.Divide ₹357 between Dev and Priya in the ratio 4 : 3. How much does Dev get (in ₹)?
  6. 6.Which of these numbers divides exactly by 4? (a) 4131 (b) 1991 (c) 6708 (d) 3214
  7. 7.36.5 ÷ 5 =
  8. 8.Which is closest to 201 × 21? (Round each number first.) (a) 400 (b) 40000 (c) 4000 (d) 8000
  9. 9.A car goes 120 km on 6 litres of petrol. How far can it go on 19 litres (in km)?
  10. 10.7/9 of 90 + 2 × 8 =
  11. 11.1/3 × 3/6 =
  12. 12.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  13. 13.8 : 10 = 32 : ?
  14. 14.4 × (11 − 3) + 30 ÷ 5 =
  15. 15.(20 + 12) × 6 − 13 =
  16. 16.60% of a number is 123. What is the number?
  17. 17.Three temple bells ring every 10, 30 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Find the HCF of 24 and 18.
  19. 19.Three temple bells ring every 8, 12 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  20. 20.Two tanks hold 100 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.9/10 − 2/4 =
  22. 22.Find the HCF of 35 and 56.
  23. 23.3.45 + 3.6 =
  24. 24.(17 + 12) × 4 − 29 =
  25. 25.Find the LCM of 45 and 20.
  26. 26.3/4 − 1/7 =
  27. 27.5% of a number is 4. What is the number?
  28. 28.Find the HCF of 91 and 78.
  29. 29.The ratio of boys to girls in a class is 7 : 1. There are 14 boys. How many girls are there?
  30. 30.Which is closest to 97 + 899 + 299? (a) 1200 (b) 1400 (c) 1500 (d) 1300
  31. 31.How many factors does 29 have?
  32. 32.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 8, 15 or 4.
  33. 33.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  34. 34.What percent of 400 is 228?
  35. 35.What is the smallest number you must take away from 189 so that it divides exactly by 12?
  36. 36.How many factors does 24 have?
  37. 37.Which of these numbers divides exactly by 9? (a) 3028 (b) 3422 (c) 1676 (d) 6255
  38. 38.Which of these numbers divides exactly by 3? (a) 7618 (b) 1653 (c) 7255 (d) 3221
  39. 39.What percent of 250 is 5?
  40. 40.Which is closest to 703 + 604 + 595? (a) 1800 (b) 1900 (c) 2100 (d) 2000

Answer key

  1. 120
  2. 50.7
  3. 50
  4. 10
  5. 204
  6. 6708
  7. 7.3
  8. 4000
  9. 380
  10. 86
  11. 1/6
  12. 50
  13. 40
  14. 38
  15. 179
  16. 205
  17. 60
  18. 6
  19. 120
  20. 20
  21. 2/5
  22. 7
  23. 7.05
  24. 87
  25. 180
  26. 17/28
  27. 80
  28. 13
  29. 2
  30. 1300
  31. 2
  32. 121
  33. 48
  34. 57
  35. 9
  36. 8
  37. 6255
  38. 1653
  39. 2
  40. 1900

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