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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 308 · 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.What is 20% of 20?
  2. 2.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  3. 3.The ratio of boys to girls in a class is 4 : 3. There are 36 boys. How many girls are there?
  4. 4.If 10 kites cost ₹70, how much do 5 kites cost (in ₹)?
  5. 5.2.4 × 9 =
  6. 6.12.5 ÷ 5 =
  7. 7.Find the LCM of 2, 15 and 4.
  8. 8.What is the smallest number you must add to 940 so that it divides exactly by 13?
  9. 9.If 8 kg of rice costs ₹256, how many kg can you buy for ₹224?
  10. 10.If 5 kg of rice costs ₹110, how many kg can you buy for ₹220?
  11. 11.If 9 kg of rice costs ₹252, how many kg can you buy for ₹84?
  12. 12.Ananya scored 20 marks out of 80 in a test. What percentage did Ananya score?
  13. 13.40 ÷ 5 × 2 + 28 =
  14. 14.Find the LCM of 32 and 28.
  15. 15.What is 1/7 of 182 km?
  16. 16.Two tanks hold 90 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.If 10 erasers cost ₹220, how much do 5 erasers cost (in ₹)?
  18. 18.Write 19/25 as a percent.
  19. 19.Round 26.21 to one decimal place. =
  20. 20.A hostel has enough food for 5 students for 7 days. How many days will the same food last for 7 students?
  21. 21.If 2 erasers cost ₹8, how much do 5 erasers cost (in ₹)?
  22. 22.5 × (28 − 2) + 60 ÷ 6 =
  23. 23.How many factors does 91 have?
  24. 24.Find the LCM of 6 and 14.
  25. 25.Find the LCM of 5, 6 and 3.
  26. 26.Divide ₹177 between Aarav and Sneha in the ratio 1 : 2. How much does Aarav get (in ₹)?
  27. 27.The ratio of boys to girls in a class is 1 : 9. There are 2 boys. How many girls are there?
  28. 28.10 : 12 = 40 : ?
  29. 29.2 : 15 = 4 : ?
  30. 30.Meera takes 45 seconds and Rohan takes 30 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?
  31. 31.What is the smallest number you must take away from 188 so that it divides exactly by 8?
  32. 32.47 − 21 ÷ 7 × 4 =
  33. 33.Which is closest to 1193 ÷ 21? (a) 30 (b) 600 (c) 60 (d) 120
  34. 34.45 − 12 ÷ 3 × 9 =
  35. 35.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  36. 36.15 − 8 ÷ 4 × 2 =
  37. 37.Three temple bells ring every 5, 24 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.30 + 7 × 4 − 6 =
  39. 39.Three temple bells ring every 5, 18 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.If 4 bottles of juice cost ₹72, how much do 5 bottles of juice cost (in ₹)?

Answer key

  1. 4
  2. 64
  3. 27
  4. 35
  5. 21.6
  6. 2.5
  7. 60
  8. 9
  9. 7
  10. 10
  11. 3
  12. 25
  13. 44
  14. 224
  15. 26
  16. 10
  17. 110
  18. 76
  19. 26.2
  20. 5
  21. 20
  22. 140
  23. 4
  24. 42
  25. 30
  26. 59
  27. 18
  28. 48
  29. 30
  30. 90
  31. 4
  32. 35
  33. 60
  34. 9
  35. 63
  36. 11
  37. 120
  38. 52
  39. 90
  40. 90

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