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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 718 · 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.Round 49217 to the nearest ten.
  2. 2.(9 + 16) × 7 − 13 =
  3. 3.Kavya takes 60 seconds and Diya takes 75 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?
  4. 4.Which is closest to 403 × 71? (Round each number first.) (a) 56000 (b) 28000 (c) 2800 (d) 280000
  5. 5.Find the LCM of 9, 12 and 3.
  6. 6.Write 3/10 as a percent.
  7. 7.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  8. 8.8.1 × 6 =
  9. 9.Round 89227 to the nearest thousand.
  10. 10.Which is closest to 804 × 91? (Round each number first.) (a) 72000 (b) 144000 (c) 720000 (d) 7200
  11. 11.What is 15% of 100?
  12. 12.Write 11/20 as a percent.
  13. 13.(11 + 4) × 4 − 7 =
  14. 14.11 + 6 × 9 − 9 =
  15. 15.(13 + 15) × 5 − 8 =
  16. 16.The HCF of two numbers is 3 and their LCM is 108. One of the numbers is 27. What is the other number?
  17. 17.What is the smallest number you must take away from 439 so that it divides exactly by 13?
  18. 18.Three temple bells ring every 6, 5 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.A hall floor is 360 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.What is the smallest number you must add to 245 so that it divides exactly by 6?
  21. 21.Find the LCM of 5, 6 and 8.
  22. 22.A car goes 84 km on 4 litres of petrol. How far can it go on 16 litres (in km)?
  23. 23.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 3, 9 or 4.
  24. 24.13.5 ÷ 5 =
  25. 25.50.4 ÷ 8 =
  26. 26.A hall floor is 315 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.Which is closest to 2006 ÷ 51? (a) 20 (b) 80 (c) 40 (d) 400
  28. 28.A car goes 138 km on 6 litres of petrol. How far can it go on 18 litres (in km)?
  29. 29.Which is closest to 803 + 604 + 195? (a) 1700 (b) 1500 (c) 1800 (d) 1600
  30. 30.7 : 11 = 28 : ?
  31. 31.The HCF of two numbers is 6 and their LCM is 84. One of the numbers is 42. What is the other number?
  32. 32.Two tanks hold 150 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.47 − 14 ÷ 2 × 3 =
  34. 34.10 : 3 = 80 : ?
  35. 35.Round 22.22 to one decimal place. =
  36. 36.Which is closest to 695 + 300 + 105? (a) 1200 (b) 1300 (c) 1000 (d) 1100
  37. 37.9.93 + 1.6 =
  38. 38.Three temple bells ring every 18, 30 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.Divide ₹550 between Aditya and Rahul in the ratio 1 : 9. How much does Rahul get (in ₹)?
  40. 40.Round 31.09 to one decimal place. =

Answer key

  1. 49220
  2. 162
  3. 300
  4. 28000
  5. 36
  6. 30
  7. 75
  8. 48.6
  9. 89000
  10. 72000
  11. 15
  12. 55
  13. 53
  14. 56
  15. 132
  16. 12
  17. 10
  18. 90
  19. 30
  20. 1
  21. 120
  22. 336
  23. 37
  24. 2.7
  25. 6.3
  26. 14
  27. 40
  28. 414
  29. 1600
  30. 44
  31. 12
  32. 30
  33. 26
  34. 24
  35. 22.2
  36. 1100
  37. 11.53
  38. 90
  39. 495
  40. 31.1

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