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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 502 · 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.A hall floor is 140 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.What is the smallest number you must take away from 111 so that it divides exactly by 9?
  3. 3.Which of these numbers divides exactly by 11? (a) 4278 (b) 1991 (c) 2170 (d) 3077
  4. 4.1/2 of 6 + 7 × 6 =
  5. 5.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  6. 6.What percent of 20 is 8?
  7. 7.What is 60% of 450?
  8. 8.Which of these numbers divides exactly by 8? (a) 4272 (b) 8029 (c) 3636 (d) 3431
  9. 9.Which is closest to 900 + 703 + 305? (a) 2000 (b) 1800 (c) 2100 (d) 1900
  10. 10.Which is closest to 398 × 78? (Round each number first.) (a) 32000 (b) 320000 (c) 64000 (d) 3200
  11. 11.37 − 54 ÷ 9 × 4 =
  12. 12.30% of a number is 180. What is the number?
  13. 13.Which is closest to 701 + 503 + 697? (a) 2000 (b) 1900 (c) 1800 (d) 2100
  14. 14.9 : 15 = 72 : ?
  15. 15.The HCF of two numbers is 8 and their LCM is 576. One of the numbers is 72. What is the other number?
  16. 16.15% of a number is 66. What is the number?
  17. 17.Three temple bells ring every 10, 15 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Find the LCM of 2, 11 and 14.
  19. 19.Two tanks hold 45 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.Find the HCF of 63 and 56.
  21. 21.What is 75% of 600?
  22. 22.How many factors does 76 have?
  23. 23.Three temple bells ring every 20, 4 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.What is the smallest number you must take away from 191 so that it divides exactly by 4?
  25. 25.Write 3/4 as a percent.
  26. 26.5/8 − 1/2 =
  27. 27.Find the LCM of 4 and 10.
  28. 28.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  29. 29.Find the LCM of 10, 6 and 4.
  30. 30.If 7 kg of rice costs ₹231, how many kg can you buy for ₹264?
  31. 31.54 ÷ 9 × 8 + 30 =
  32. 32.The ratio of boys to girls in a class is 6 : 7. There are 48 boys. How many girls are there?
  33. 33.Find the LCM of 2 and 7.
  34. 34.21 + 3 × 12 − 15 =
  35. 35.120% of a number is 186. What is the number?
  36. 36.The ratio of boys to girls in a class is 1 : 4. There are 5 boys. How many girls are there?
  37. 37.A car goes 50 km on 2 litres of petrol. How far can it go on 5 litres (in km)?
  38. 38.Which is closest to 4502 ÷ 51? (a) 180 (b) 900 (c) 45 (d) 90
  39. 39.5 : 13 = 40 : ?
  40. 40.Which of these numbers divides exactly by 11? (a) 1421 (b) 3474 (c) 8833 (d) 9154

Answer key

  1. 28
  2. 3
  3. 1991
  4. 45
  5. 75
  6. 40
  7. 270
  8. 4272
  9. 1900
  10. 32000
  11. 13
  12. 600
  13. 1900
  14. 120
  15. 64
  16. 440
  17. 60
  18. 154
  19. 15
  20. 7
  21. 450
  22. 6
  23. 60
  24. 3
  25. 75
  26. 1/8
  27. 20
  28. 28
  29. 60
  30. 8
  31. 78
  32. 56
  33. 14
  34. 42
  35. 155
  36. 20
  37. 125
  38. 90
  39. 104
  40. 8833

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