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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 495 · 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.Tara scored 2 marks out of 25 in a test. What percentage did Tara score?
  2. 2.2 : 15 = 18 : ?
  3. 3.Three temple bells ring every 30, 8 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 6. What is the other number?
  5. 5.Find the HCF of 39 and 104.
  6. 6.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 5, 3 or 9.
  7. 7.What is the smallest number you must add to 586 so that it divides exactly by 8?
  8. 8.Vivaan takes 72 seconds and Kabir 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?
  9. 9.1/2 of 12 + 4 × 8 =
  10. 10.11 : 9 = 66 : ?
  11. 11.2 : 14 = 8 : ?
  12. 12.(12 + 18) × 7 − 12 =
  13. 13.What is 7/8 of 112 litres?
  14. 14.How many factors does 66 have?
  15. 15.10% of a number is 1. What is the number?
  16. 16.What percent of 200 is 150?
  17. 17.A car goes 84 km on 6 litres of petrol. How far can it go on 40 litres (in km)?
  18. 18.What is the smallest number you must add to 335 so that it divides exactly by 4?
  19. 19.What percent of 50 is 22?
  20. 20.Round 18.78 to one decimal place. =
  21. 21.5/8 of 48 + 8 × 7 =
  22. 22.3.3 × 2 =
  23. 23.Write 22/25 as a percent.
  24. 24.Find the LCM of 5, 12 and 2.
  25. 25.Which of these numbers divides exactly by 4? (a) 6486 (b) 4625 (c) 6832 (d) 9883
  26. 26.Find the HCF of 70 and 20.
  27. 27.What percent of 25 is 1?
  28. 28.(10 + 3) × 7 − 19 =
  29. 29.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  30. 30.What is 5% of 120?
  31. 31.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?
  32. 32.If 11 erasers cost ₹132, how much do 10 erasers cost (in ₹)?
  33. 33.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  34. 34.Find the HCF of 14 and 16.
  35. 35.Find the LCM of 5, 8 and 3.
  36. 36.Divide ₹24 between Kavya and Ananya in the ratio 1 : 3. How much does Kavya get (in ₹)?
  37. 37.Round 45594 to the nearest hundred.
  38. 38.1/6 + 7/11 =
  39. 39.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.A hall floor is 125 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 8
  2. 135
  3. 120
  4. 9
  5. 13
  6. 46
  7. 6
  8. 360
  9. 38
  10. 54
  11. 56
  12. 198
  13. 98
  14. 8
  15. 10
  16. 75
  17. 560
  18. 1
  19. 44
  20. 18.8
  21. 86
  22. 6.6
  23. 88
  24. 60
  25. 6832
  26. 10
  27. 4
  28. 72
  29. 225
  30. 6
  31. 36
  32. 120
  33. 20
  34. 2
  35. 120
  36. 6
  37. 45600
  38. 53/66
  39. 20
  40. 10

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