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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 73 · 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. 1.5 × (27 − 20) + 18 ÷ 9 =
  2. 2.3.33 + 9.2 =
  3. 3.If 6 kg of rice costs ₹420, how many kg can you buy for ₹910?
  4. 4.Two tanks hold 35 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.16 + 9 × 3 − 9 =
  6. 6.Find the LCM of 5, 2 and 14.
  7. 7.Round 93.48 to one decimal place. =
  8. 8.How many factors does 58 have?
  9. 9.19 − 9 ÷ 3 × 2 =
  10. 10.1/6 + 6/10 =
  11. 11.How many factors does 46 have?
  12. 12.Find the HCF of 15 and 6.
  13. 13.Which is closest to 800 ÷ 19? (a) 20 (b) 80 (c) 400 (d) 40
  14. 14.Find the HCF of 90 and 105.
  15. 15.8 : 12 = 24 : ?
  16. 16.Divide ₹456 between Dev and Aarav in the ratio 5 : 7. How much does Dev get (in ₹)?
  17. 17.What is the smallest number you must add to 856 so that it divides exactly by 6?
  18. 18.Round 8474 to the nearest hundred.
  19. 19.What is 80% of 430?
  20. 20.Write 19/25 as a percent.
  21. 21.Aditya takes 80 seconds and Ishaan takes 45 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?
  22. 22.Find the LCM of 12 and 8.
  23. 23.Two tanks hold 70 litres and 30 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 third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  25. 25.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  26. 26.Find the HCF of 42 and 54.
  27. 27.If 2 kites cost ₹112, how much do 3 kites cost (in ₹)?
  28. 28.If 6 bottles of juice cost ₹42, how much do 19 bottles of juice cost (in ₹)?
  29. 29.Two tanks hold 30 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Three temple bells ring every 4, 8 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.What is the smallest number you must add to 442 so that it divides exactly by 8?
  32. 32.If 9 erasers cost ₹378, how much do 15 erasers cost (in ₹)?
  33. 33.3 : 5 = 9 : ?
  34. 34.14 ÷ 7 × 2 + 24 =
  35. 35.What is 5/7 of 91 km?
  36. 36.7 × (24 − 18) + 28 ÷ 4 =
  37. 37.150% of a number is 639. What is the number?
  38. 38.Which is closest to 2695 ÷ 31? (a) 45 (b) 900 (c) 180 (d) 90
  39. 39.Find the LCM of 5, 11 and 10.
  40. 40.Three temple bells ring every 4, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 37
  2. 12.53
  3. 13
  4. 5
  5. 34
  6. 70
  7. 93.5
  8. 4
  9. 13
  10. 23/30
  11. 4
  12. 3
  13. 40
  14. 15
  15. 36
  16. 190
  17. 2
  18. 8500
  19. 344
  20. 76
  21. 720
  22. 24
  23. 10
  24. 63
  25. 8
  26. 6
  27. 168
  28. 133
  29. 10
  30. 120
  31. 6
  32. 630
  33. 15
  34. 28
  35. 65
  36. 49
  37. 426
  38. 90
  39. 110
  40. 36

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