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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 915 · 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. 1.1/5 of 55 + 2 × 8 =
  2. 2.Two tanks hold 40 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.Find the LCM of 18 and 21.
  4. 4.Tara scored 18 marks out of 40 in a test. What percentage did Tara score?
  5. 5.What is 60% of 430?
  6. 6.What percent of 500 is 115?
  7. 7.19.4 ÷ 2 =
  8. 8.8.16 + 1.9 =
  9. 9.A hall floor is 315 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.A hall floor is 175 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.The ratio of boys to girls in a class is 7 : 3. There are 49 boys. How many girls are there?
  12. 12.A car goes 72 km on 4 litres of petrol. How far can it go on 35 litres (in km)?
  13. 13.A car goes 56 km on 4 litres of petrol. How far can it go on 5 litres (in km)?
  14. 14.If 7 cricket balls cost ₹357, how much do 9 cricket balls cost (in ₹)?
  15. 15.21.6 ÷ 9 =
  16. 16.36 + 9 × 10 − 2 =
  17. 17.Find the HCF of 20 and 36.
  18. 18.Three temple bells ring every 4, 6 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.22 − 24 ÷ 8 × 5 =
  20. 20.6/9 − 3/10 =
  21. 21.Find the LCM of 3, 10 and 14.
  22. 22.12 : 9 = 108 : ?
  23. 23.70 ÷ 7 × 4 + 20 =
  24. 24.35 + 8 × 6 − 25 =
  25. 25.(3 + 15) × 3 − 23 =
  26. 26.Two tanks hold 50 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.Round 36553 to the nearest hundred.
  28. 28.Two tanks hold 320 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  29. 29.What is the smallest number you must take away from 801 so that it divides exactly by 12?
  30. 30.(9 + 6) × 3 − 26 =
  31. 31.Round 2768 to the nearest ten.
  32. 32.Find the HCF of 28 and 63.
  33. 33.2/7 of 14 + 7 × 4 =
  34. 34.3/8 of 64 + 2 × 8 =
  35. 35.What percent of 50 is 12?
  36. 36.Find the LCM of 2, 5 and 3.
  37. 37.What is the smallest number you must add to 932 so that it divides exactly by 13?
  38. 38.How many factors does 76 have?
  39. 39.A car goes 110 km on 11 litres of petrol. How far can it go on 17 litres (in km)?
  40. 40.The HCF of two numbers is 9 and their LCM is 189. One of the numbers is 27. What is the other number?

Answer key

  1. 27
  2. 20
  3. 126
  4. 45
  5. 258
  6. 23
  7. 9.7
  8. 10.06
  9. 35
  10. 14
  11. 21
  12. 630
  13. 70
  14. 459
  15. 2.4
  16. 124
  17. 4
  18. 36
  19. 7
  20. 11/30
  21. 210
  22. 81
  23. 60
  24. 58
  25. 31
  26. 10
  27. 36600
  28. 40
  29. 9
  30. 19
  31. 2770
  32. 7
  33. 32
  34. 40
  35. 24
  36. 30
  37. 4
  38. 6
  39. 170
  40. 63

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