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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 119 · 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 car goes 180 km on 9 litres of petrol. How far can it go on 2 litres (in km)?
  2. 2.Aarav takes 30 seconds and Arjun 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?
  3. 3.9.7 × 9 =
  4. 4.9.25 + 8.4 =
  5. 5.How many factors does 72 have?
  6. 6.A hostel has enough food for 6 students for 27 days. How many days will the same food last for 18 students?
  7. 7.A hall floor is 240 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.The HCF of two numbers is 8 and their LCM is 144. One of the numbers is 16. What is the other number?
  9. 9.If 2 kg of rice costs ₹40, how many kg can you buy for ₹260?
  10. 10.57 − 40 ÷ 5 × 6 =
  11. 11.Which is closest to 1207 ÷ 31? (a) 400 (b) 80 (c) 20 (d) 40
  12. 12.Find the LCM of 7, 3 and 5.
  13. 13.Find the LCM of 12, 2 and 9.
  14. 14.If 2 kg of rice costs ₹126, how many kg can you buy for ₹945?
  15. 15.15% of a number is 60. What is the number?
  16. 16.A car goes 32 km on 2 litres of petrol. How far can it go on 20 litres (in km)?
  17. 17.Round 44.16 to one decimal place. =
  18. 18.Three temple bells ring every 18, 10 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 18. What is the other number?
  20. 20.Find the LCM of 6, 13 and 9.
  21. 21.What is 1/10 of 50 litres?
  22. 22.The ratio of boys to girls in a class is 4 : 5. There are 16 boys. How many girls are there?
  23. 23.Three temple bells ring every 20, 6 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Find the LCM of 30 and 24.
  25. 25.Write 11/50 as a percent.
  26. 26.What is 50% of 484?
  27. 27.Which of these numbers divides exactly by 8? (a) 4642 (b) 2635 (c) 4384 (d) 5860
  28. 28.What is the smallest number you must add to 135 so that it divides exactly by 11?
  29. 29.Find the HCF of 33 and 88.
  30. 30.Which is closest to 796 × 89? (Round each number first.) (a) 720000 (b) 7200 (c) 72000 (d) 144000
  31. 31.Which is closest to 402 + 604 + 396? (a) 1300 (b) 1400 (c) 1600 (d) 1500
  32. 32.Round 90126 to the nearest hundred.
  33. 33.5.2 × 8 =
  34. 34.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 6, 12 or 8.
  35. 35.7 : 6 = 28 : ?
  36. 36.A hall floor is 210 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.Two tanks hold 80 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  38. 38.18.4 ÷ 8 =
  39. 39.A car goes 44 km on 2 litres of petrol. How far can it go on 35 litres (in km)?
  40. 40.A hall floor is 200 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 40
  2. 150
  3. 87.3
  4. 17.65
  5. 12
  6. 9
  7. 30
  8. 72
  9. 13
  10. 9
  11. 40
  12. 105
  13. 36
  14. 15
  15. 400
  16. 320
  17. 44.2
  18. 90
  19. 27
  20. 234
  21. 5
  22. 20
  23. 120
  24. 120
  25. 22
  26. 242
  27. 4384
  28. 8
  29. 11
  30. 72000
  31. 1400
  32. 90100
  33. 41.6
  34. 28
  35. 24
  36. 21
  37. 20
  38. 2.3
  39. 770
  40. 12

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