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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 305 · 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 10, 15 and 5.
  2. 2.Which is closest to 1497 ÷ 51? (a) 300 (b) 60 (c) 15 (d) 30
  3. 3.7 × (13 − 5) + 49 ÷ 7 =
  4. 4.What is the smallest number you must add to 970 so that it divides exactly by 13?
  5. 5.6 × (15 − 1) + 60 ÷ 6 =
  6. 6.What is the smallest number you must take away from 129 so that it divides exactly by 13?
  7. 7.39.2 ÷ 4 =
  8. 8.Which is closest to 697 × 78? (Round each number first.) (a) 5600 (b) 560000 (c) 56000 (d) 112000
  9. 9.What is the smallest number you must take away from 682 so that it divides exactly by 9?
  10. 10.What is the smallest number you must take away from 904 so that it divides exactly by 7?
  11. 11.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 4, 10 or 3.
  12. 12.Write 31/50 as a percent.
  13. 13.If 12 kites cost ₹408, how much do 7 kites cost (in ₹)?
  14. 14.Round 20065 to the nearest hundred.
  15. 15.What is the smallest number you must add to 453 so that it divides exactly by 13?
  16. 16.Find the HCF of 12 and 16.
  17. 17.Which is closest to 196 × 90? (Round each number first.) (a) 1800 (b) 18000 (c) 180000 (d) 36000
  18. 18.If 3 pencil boxes cost ₹156, how much do 5 pencil boxes cost (in ₹)?
  19. 19.Which is closest to 4491 ÷ 49? (a) 180 (b) 90 (c) 45 (d) 900
  20. 20.How many factors does 35 have?
  21. 21.Three temple bells ring every 6, 5 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Find the LCM of 12 and 10.
  23. 23.Two tanks hold 125 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.Find the HCF of 36 and 8.
  25. 25.The ratio of boys to girls in a class is 9 : 7. There are 27 boys. How many girls are there?
  26. 26.If 5 cricket balls cost ₹50, how much do 2 cricket balls cost (in ₹)?
  27. 27.Aarav scored 10 marks out of 50 in a test. What percentage did Aarav score?
  28. 28.Three temple bells ring every 6, 10 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.Divide ₹319 between Aarav and Sneha in the ratio 3 : 8. How much does Sneha get (in ₹)?
  30. 30.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  31. 31.Farhan takes 75 seconds and Saanvi takes 90 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?
  32. 32.What is the smallest number you must take away from 532 so that it divides exactly by 11?
  33. 33.9.83 + 5.5 =
  34. 34.What is 150% of 242?
  35. 35.Which of these numbers divides exactly by 3? (a) 9781 (b) 2832 (c) 6919 (d) 4882
  36. 36.A car goes 200 km on 8 litres of petrol. How far can it go on 4 litres (in km)?
  37. 37.How many factors does 31 have?
  38. 38.What percent of 20 is 19?
  39. 39.Find the LCM of 15, 4 and 6.
  40. 40.The ratio of boys to girls in a class is 8 : 9. There are 32 boys. How many girls are there?

Answer key

  1. 30
  2. 30
  3. 63
  4. 5
  5. 94
  6. 12
  7. 9.8
  8. 56000
  9. 7
  10. 1
  11. 62
  12. 62
  13. 238
  14. 20100
  15. 2
  16. 4
  17. 18000
  18. 260
  19. 90
  20. 4
  21. 120
  22. 60
  23. 25
  24. 4
  25. 21
  26. 20
  27. 20
  28. 120
  29. 232
  30. 36
  31. 450
  32. 4
  33. 15.33
  34. 363
  35. 2832
  36. 100
  37. 2
  38. 95
  39. 60
  40. 36

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