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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 793 · 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.A hall floor is 200 cm long and 175 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.Find the HCF of 20 and 35.
  3. 3.What is the smallest number you must add to 973 so that it divides exactly by 8?
  4. 4.Three temple bells ring every 12, 4 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.What is the smallest number you must take away from 251 so that it divides exactly by 9?
  6. 6.Ananya takes 36 seconds and Dev takes 40 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?
  7. 7.Find the LCM of 4, 15 and 8.
  8. 8.Round 48926 to the nearest thousand.
  9. 9.What is the smallest number you must take away from 454 so that it divides exactly by 13?
  10. 10.Write 9/25 as a percent.
  11. 11.2/7 of 14 + 3 × 3 =
  12. 12.3/4 − 5/8 =
  13. 13.36 ÷ 9 × 9 + 6 =
  14. 14.What is 1/9 of 171 litres?
  15. 15.What percent of 40 is 30?
  16. 16.What is the smallest number you must take away from 149 so that it divides exactly by 4?
  17. 17.How many factors does 15 have?
  18. 18.7.7 × 9 =
  19. 19.What is the smallest number you must add to 221 so that it divides exactly by 9?
  20. 20.3/8 − 2/10 =
  21. 21.Find the HCF of 56 and 70.
  22. 22.What is the smallest number you must take away from 257 so that it divides exactly by 6?
  23. 23.Three temple bells ring every 5, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.How many factors does 55 have?
  25. 25.40 ÷ 4 × 4 + 10 =
  26. 26.How many factors does 48 have?
  27. 27.Find the LCM of 5, 3 and 8.
  28. 28.Round 69804 to the nearest thousand.
  29. 29.8 painters can paint a school in 25 days. How many days would 4 painters take, working at the same speed?
  30. 30.The ratio of boys to girls in a class is 9 : 7. There are 45 boys. How many girls are there?
  31. 31.107 − 48 ÷ 6 × 9 =
  32. 32.Find the HCF of 96 and 60.
  33. 33.What percent of 40 is 10?
  34. 34.Two tanks hold 315 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.If 3 kg of rice costs ₹66, how many kg can you buy for ₹154?
  36. 36.8 : 6 = 32 : ?
  37. 37.20.7 ÷ 9 =
  38. 38.1/3 of 9 + 5 × 7 =
  39. 39.Vivaan takes 80 seconds and Ananya takes 30 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?
  40. 40.What is 60% of 525?

Answer key

  1. 56
  2. 5
  3. 3
  4. 60
  5. 8
  6. 360
  7. 120
  8. 49000
  9. 12
  10. 36
  11. 13
  12. 1/8
  13. 42
  14. 19
  15. 75
  16. 1
  17. 4
  18. 69.3
  19. 4
  20. 7/40
  21. 14
  22. 5
  23. 60
  24. 4
  25. 50
  26. 10
  27. 120
  28. 70000
  29. 50
  30. 35
  31. 35
  32. 12
  33. 25
  34. 45
  35. 7
  36. 24
  37. 2.3
  38. 38
  39. 240
  40. 315

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