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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 183 · 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. 1.2 : 6 = 12 : ?
  2. 2.If 6 kg of rice costs ₹438, how many kg can you buy for ₹511?
  3. 3.Round 45.72 to one decimal place. =
  4. 4.3/7 − 1/8 =
  5. 5.Find the LCM of 15, 3 and 4.
  6. 6.Find the HCF of 14 and 63.
  7. 7.8 × (11 − 1) + 6 ÷ 2 =
  8. 8.Which is closest to 896 × 89? (Round each number first.) (a) 810000 (b) 8100 (c) 81000 (d) 162000
  9. 9.Three temple bells ring every 4, 24 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.5/7 + 3/10 =
  11. 11.The ratio of boys to girls in a class is 3 : 5. There are 9 boys. How many girls are there?
  12. 12.Three temple bells ring every 12, 18 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.Find the HCF of 120 and 135.
  14. 14.3 painters can paint a school in 30 days. How many days would 5 painters take, working at the same speed?
  15. 15.If 9 mangoes cost ₹270, how much do 14 mangoes cost (in ₹)?
  16. 16.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  17. 17.4/9 − 5/12 =
  18. 18.If 7 cricket balls cost ₹21, how much do 9 cricket balls cost (in ₹)?
  19. 19.How many factors does 67 have?
  20. 20.A hostel has enough food for 10 students for 8 days. How many days will the same food last for 20 students?
  21. 21.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  22. 22.7.94 + 3.8 =
  23. 23.Divide ₹496 between Rohan and Ananya in the ratio 9 : 7. How much does Rohan get (in ₹)?
  24. 24.What is 20% of 600?
  25. 25.If 3 kg of rice costs ₹207, how many kg can you buy for ₹690?
  26. 26.Which is closest to 798 ÷ 41? (a) 20 (b) 200 (c) 40 (d) 10
  27. 27.Find the LCM of 7, 4 and 2.
  28. 28.What is 2/7 of ₹105?
  29. 29.Find the LCM of 6 and 7.
  30. 30.Which is closest to 501 + 597 + 601? (a) 1900 (b) 1600 (c) 1700 (d) 1800
  31. 31.Which is closest to 303 + 202 + 705? (a) 1400 (b) 1100 (c) 1300 (d) 1200
  32. 32.A hall floor is 150 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.9 × (10 − 7) + 8 ÷ 2 =
  34. 34.Two tanks hold 135 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.Which is closest to 899 × 22? (Round each number first.) (a) 1800 (b) 36000 (c) 180000 (d) 18000
  36. 36.Which is closest to 2403 ÷ 39? (a) 120 (b) 30 (c) 60 (d) 600
  37. 37.Three temple bells ring every 30, 6 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.How many factors does 35 have?
  39. 39.What percent of 20 is 9?
  40. 40.Find the HCF of 105 and 60.

Answer key

  1. 36
  2. 7
  3. 45.7
  4. 17/56
  5. 60
  6. 7
  7. 83
  8. 81000
  9. 72
  10. 71/70
  11. 15
  12. 36
  13. 15
  14. 18
  15. 420
  16. 20
  17. 1/36
  18. 27
  19. 2
  20. 4
  21. 81
  22. 11.74
  23. 279
  24. 120
  25. 10
  26. 20
  27. 28
  28. 30
  29. 42
  30. 1700
  31. 1200
  32. 10
  33. 31
  34. 15
  35. 18000
  36. 60
  37. 60
  38. 4
  39. 45
  40. 15

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