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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 836 · 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.Find the HCF of 77 and 22.
  2. 2.8.33 + 7.4 =
  3. 3.What percent of 200 is 80?
  4. 4.Find the HCF of 24 and 84.
  5. 5.2/4 + 2/5 =
  6. 6.What is 30% of 220?
  7. 7.Find the LCM of 2, 5 and 11.
  8. 8.How many factors does 92 have?
  9. 9.What is 8/9 of 27 km?
  10. 10.If 3 notebooks cost ₹114, how much do 2 notebooks cost (in ₹)?
  11. 11.Find the LCM of 5, 4 and 8.
  12. 12.Find the LCM of 6 and 8.
  13. 13.Three temple bells ring every 20, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.Rahul scored 24 marks out of 80 in a test. What percentage did Rahul score?
  15. 15.Find the HCF of 28 and 12.
  16. 16.Round 90.76 to one decimal place. =
  17. 17.3 : 4 = 21 : ?
  18. 18.What is the smallest number you must take away from 522 so that it divides exactly by 11?
  19. 19.5/7 of 77 + 4 × 6 =
  20. 20.Find the HCF of 9 and 15.
  21. 21.The HCF of two numbers is 7 and their LCM is 84. One of the numbers is 28. What is the other number?
  22. 22.Aarav takes 54 seconds and Rohan takes 90 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?
  23. 23.A car goes 132 km on 12 litres of petrol. How far can it go on 7 litres (in km)?
  24. 24.7 : 8 = 63 : ?
  25. 25.6/10 − 5/9 =
  26. 26.Two tanks hold 90 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.A hostel has enough food for 10 students for 14 days. How many days will the same food last for 20 students?
  28. 28.1.7 × 9 =
  29. 29.What is 60% of 415?
  30. 30.Which is closest to 202 × 49? (Round each number first.) (a) 10000 (b) 1000 (c) 20000 (d) 100000
  31. 31.5/9 of 108 + 3 × 8 =
  32. 32.What is 20% of 145?
  33. 33.Which of these numbers divides exactly by 8? (a) 5996 (b) 9928 (c) 8381 (d) 9300
  34. 34.8/10 − 1/4 =
  35. 35.16.8 ÷ 3 =
  36. 36.Which is closest to 2102 ÷ 29? (a) 700 (b) 35 (c) 140 (d) 70
  37. 37.2/4 − 1/7 =
  38. 38.How many factors does 45 have?
  39. 39.The HCF of two numbers is 7 and their LCM is 168. One of the numbers is 56. What is the other number?
  40. 40.Find the LCM of 8 and 36.

Answer key

  1. 11
  2. 15.73
  3. 40
  4. 12
  5. 9/10
  6. 66
  7. 110
  8. 6
  9. 24
  10. 76
  11. 40
  12. 24
  13. 60
  14. 30
  15. 4
  16. 90.8
  17. 28
  18. 5
  19. 79
  20. 3
  21. 21
  22. 270
  23. 77
  24. 72
  25. 2/45
  26. 30
  27. 7
  28. 15.3
  29. 249
  30. 10000
  31. 84
  32. 29
  33. 9928
  34. 11/20
  35. 5.6
  36. 70
  37. 5/14
  38. 6
  39. 21
  40. 72

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