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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 656 · 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 30% of 340?
  2. 2.What is the smallest number you must take away from 644 so that it divides exactly by 12?
  3. 3.Three temple bells ring every 4, 24 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.What is 1/2 of 36 litres?
  5. 5.3/4 − 3/6 =
  6. 6.Write 1/2 as a percent.
  7. 7.What is 15% of 80?
  8. 8.The HCF of two numbers is 2 and their LCM is 60. One of the numbers is 12. What is the other number?
  9. 9.A hall floor is 150 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.30 ÷ 6 × 4 + 17 =
  11. 11.If 8 kg of rice costs ₹672, how many kg can you buy for ₹252?
  12. 12.Find the LCM of 12 and 10.
  13. 13.10 : 11 = 70 : ?
  14. 14.Which is closest to 398 × 72? (Round each number first.) (a) 28000 (b) 56000 (c) 2800 (d) 280000
  15. 15.If 2 kites cost ₹90, how much do 13 kites cost (in ₹)?
  16. 16.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  17. 17.(18 + 3) × 7 − 8 =
  18. 18.2 × (28 − 3) + 16 ÷ 4 =
  19. 19.20 ÷ 5 × 5 + 16 =
  20. 20.Find the HCF of 81 and 63.
  21. 21.16 ÷ 4 × 2 + 2 =
  22. 22.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  23. 23.5.3 × 6 =
  24. 24.The ratio of boys to girls in a class is 9 : 8. There are 27 boys. How many girls are there?
  25. 25.A hall floor is 60 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  26. 26.1.8 × 8 =
  27. 27.The HCF of two numbers is 9 and their LCM is 108. One of the numbers is 36. What is the other number?
  28. 28.Kabir scored 5 marks out of 25 in a test. What percentage did Kabir score?
  29. 29.3 × (12 − 7) + 48 ÷ 4 =
  30. 30.Find the HCF of 24 and 60.
  31. 31.The ratio of boys to girls in a class is 1 : 6. There are 10 boys. How many girls are there?
  32. 32.10 : 9 = 70 : ?
  33. 33.Which of these numbers divides exactly by 11? (a) 2057 (b) 9782 (c) 4815 (d) 9133
  34. 34.What is 50% of 568?
  35. 35.Find the LCM of 13, 3 and 15.
  36. 36.What is 3/8 of 168 kg?
  37. 37.Arjun takes 30 seconds and Ananya 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?
  38. 38.Find the HCF of 105 and 75.
  39. 39.A hostel has enough food for 5 students for 11 days. How many days will the same food last for 11 students?
  40. 40.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).

Answer key

  1. 102
  2. 8
  3. 120
  4. 18
  5. 1/4
  6. 50
  7. 12
  8. 10
  9. 6
  10. 37
  11. 3
  12. 60
  13. 77
  14. 28000
  15. 585
  16. 75
  17. 139
  18. 54
  19. 36
  20. 9
  21. 10
  22. 200
  23. 31.8
  24. 24
  25. 6
  26. 14.4
  27. 27
  28. 20
  29. 27
  30. 12
  31. 60
  32. 63
  33. 2057
  34. 284
  35. 195
  36. 63
  37. 90
  38. 15
  39. 5
  40. 8

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