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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 170 · 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. 1.30% of a number is 108. What is the number?
  2. 2.1/4 − 1/6 =
  3. 3.Vivaan takes 75 seconds and Meera 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?
  4. 4.Round 58.61 to one decimal place. =
  5. 5.Divide ₹75 between Priya and Aditya in the ratio 1 : 4. How much does Priya get (in ₹)?
  6. 6.1/3 + 4/5 =
  7. 7.9/10 − 3/12 =
  8. 8.Find the HCF of 63 and 36.
  9. 9.Three temple bells ring every 8, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.If 4 kg of rice costs ₹312, how many kg can you buy for ₹234?
  11. 11.What is the smallest number you must add to 690 so that it divides exactly by 12?
  12. 12.Kavya scored 40 marks out of 80 in a test. What percentage did Kavya score?
  13. 13.What is 5/7 of 77 kg?
  14. 14.36 + 11 × 10 − 11 =
  15. 15.Vivaan scored 11 marks out of 20 in a test. What percentage did Vivaan score?
  16. 16.Three temple bells ring every 18, 24 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.Write 1/2 as a percent.
  18. 18.The ratio of boys to girls in a class is 9 : 4. There are 27 boys. How many girls are there?
  19. 19.Find the LCM of 10 and 4.
  20. 20.What is 20% of 575?
  21. 21.15% of a number is 36. What is the number?
  22. 22.If 5 kg of rice costs ₹165, how many kg can you buy for ₹99?
  23. 23.Round 57.47 to one decimal place. =
  24. 24.Write 2/5 as a percent.
  25. 25.49 + 7 × 2 − 40 =
  26. 26.A hostel has enough food for 4 students for 19 days. How many days will the same food last for 19 students?
  27. 27.16 + 6 × 6 − 5 =
  28. 28.What is the smallest number you must take away from 757 so that it divides exactly by 4?
  29. 29.Which of these numbers divides exactly by 9? (a) 1713 (b) 2307 (c) 8163 (d) 8933
  30. 30.Find the LCM of 24 and 15.
  31. 31.What is the smallest number you must take away from 485 so that it divides exactly by 13?
  32. 32.How many factors does 24 have?
  33. 33.1.32 + 5.8 =
  34. 34.Divide ₹75 between Nisha and Isha in the ratio 2 : 1. How much does Nisha get (in ₹)?
  35. 35.The ratio of boys to girls in a class is 5 : 1. There are 10 boys. How many girls are there?
  36. 36.Find the HCF of 30 and 75.
  37. 37.2/5 of 35 + 4 × 6 =
  38. 38.44 + 7 × 3 − 27 =
  39. 39.8 : 6 = 16 : ?
  40. 40.6/9 − 1/2 =

Answer key

  1. 360
  2. 1/12
  3. 225
  4. 58.6
  5. 15
  6. 17/15
  7. 13/20
  8. 9
  9. 24
  10. 3
  11. 6
  12. 50
  13. 55
  14. 135
  15. 55
  16. 72
  17. 50
  18. 12
  19. 20
  20. 115
  21. 240
  22. 3
  23. 57.5
  24. 40
  25. 23
  26. 4
  27. 47
  28. 1
  29. 8163
  30. 120
  31. 4
  32. 8
  33. 7.12
  34. 50
  35. 2
  36. 15
  37. 38
  38. 38
  39. 12
  40. 1/6

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