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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 620 · 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.If 6 kg of rice costs ₹198, how many kg can you buy for ₹462?
  2. 2.3/7 of 70 + 7 × 2 =
  3. 3.How many factors does 77 have?
  4. 4.Find the LCM of 20 and 32.
  5. 5.65 − 36 ÷ 4 × 7 =
  6. 6.Which is closest to 696 × 49? (Round each number first.) (a) 70000 (b) 3500 (c) 350000 (d) 35000
  7. 7.Find the LCM of 10, 5 and 15.
  8. 8.Find the HCF of 8 and 6.
  9. 9.How many factors does 65 have?
  10. 10.(18 + 15) × 7 − 12 =
  11. 11.Write 7/10 as a percent.
  12. 12.Divide ₹25 between Tara and Dev in the ratio 2 : 3. How much does Dev get (in ₹)?
  13. 13.What is the smallest number you must take away from 763 so that it divides exactly by 8?
  14. 14.What is the smallest number you must add to 561 so that it divides exactly by 9?
  15. 15.Manav scored 4 marks out of 40 in a test. What percentage did Manav score?
  16. 16.Three temple bells ring every 8, 4 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.Three temple bells ring every 8, 20 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.2/3 − 1/9 =
  19. 19.What is the smallest number you must take away from 660 so that it divides exactly by 9?
  20. 20.Find the HCF of 30 and 75.
  21. 21.104 − 45 ÷ 5 × 9 =
  22. 22.7.9 × 7 =
  23. 23.Tara takes 45 seconds and Ishaan takes 75 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?
  24. 24.6/8 + 1/11 =
  25. 25.If 2 kg of rice costs ₹140, how many kg can you buy for ₹560?
  26. 26.Find the HCF of 39 and 26.
  27. 27.Which is closest to 595 + 795 + 95? (a) 1600 (b) 1700 (c) 1400 (d) 1500
  28. 28.Which is closest to 602 × 39? (Round each number first.) (a) 2400 (b) 240000 (c) 24000 (d) 48000
  29. 29.The ratio of boys to girls in a class is 2 : 7. There are 20 boys. How many girls are there?
  30. 30.The ratio of boys to girls in a class is 5 : 9. There are 45 boys. How many girls are there?
  31. 31.60 ÷ 6 × 4 + 18 =
  32. 32.76 − 24 ÷ 3 × 5 =
  33. 33.Find the HCF of 45 and 20.
  34. 34.What is the smallest number you must add to 819 so that it divides exactly by 6?
  35. 35.What is the smallest number you must take away from 412 so that it divides exactly by 13?
  36. 36.What percent of 250 is 140?
  37. 37.A hall floor is 240 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  38. 38.A car goes 91 km on 7 litres of petrol. How far can it go on 19 litres (in km)?
  39. 39.Two tanks hold 20 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.Three temple bells ring every 10, 5 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 14
  2. 44
  3. 4
  4. 160
  5. 2
  6. 35000
  7. 30
  8. 2
  9. 4
  10. 219
  11. 70
  12. 15
  13. 3
  14. 6
  15. 10
  16. 40
  17. 120
  18. 5/9
  19. 3
  20. 15
  21. 23
  22. 55.3
  23. 225
  24. 37/44
  25. 8
  26. 13
  27. 1500
  28. 24000
  29. 70
  30. 81
  31. 58
  32. 36
  33. 5
  34. 3
  35. 9
  36. 56
  37. 40
  38. 247
  39. 5
  40. 90

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