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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 63 · 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. 1.9 : 8 = 63 : ?
  2. 2.What is the smallest number you must add to 298 so that it divides exactly by 11?
  3. 3.If 9 kg of rice costs ₹765, how many kg can you buy for ₹340?
  4. 4.Two tanks hold 10 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.What is the smallest number you must add to 711 so that it divides exactly by 4?
  6. 6.If 5 kg of rice costs ₹115, how many kg can you buy for ₹46?
  7. 7.A car goes 144 km on 6 litres of petrol. How far can it go on 29 litres (in km)?
  8. 8.Find the LCM of 8 and 28.
  9. 9.Round 28.64 to one decimal place. =
  10. 10.12% of a number is 48. What is the number?
  11. 11.1/2 of 8 + 9 × 9 =
  12. 12.4 : 15 = 20 : ?
  13. 13.How many factors does 27 have?
  14. 14.13 + 6 × 12 − 11 =
  15. 15.4 : 15 = 28 : ?
  16. 16.Find the LCM of 4, 5 and 8.
  17. 17.What is 4/5 of 100 litres?
  18. 18.11 : 13 = 66 : ?
  19. 19.Round 91.54 to one decimal place. =
  20. 20.How many factors does 42 have?
  21. 21.(10 + 13) × 4 − 2 =
  22. 22.What percent of 250 is 65?
  23. 23.66 − 72 ÷ 8 × 6 =
  24. 24.How many factors does 76 have?
  25. 25.Find the LCM of 32 and 28.
  26. 26.The ratio of boys to girls in a class is 5 : 9. There are 45 boys. How many girls are there?
  27. 27.(5 + 14) × 8 − 22 =
  28. 28.Round 59197 to the nearest ten.
  29. 29.A hall floor is 140 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Which is closest to 900 × 48? (Round each number first.) (a) 4500 (b) 90000 (c) 45000 (d) 450000
  31. 31.5% of a number is 12. What is the number?
  32. 32.What is 30% of 90?
  33. 33.A car goes 220 km on 10 litres of petrol. How far can it go on 21 litres (in km)?
  34. 34.2.2 × 6 =
  35. 35.2/5 of 20 + 2 × 4 =
  36. 36.Find the LCM of 40 and 25.
  37. 37.5/10 − 2/7 =
  38. 38.Find the HCF of 39 and 26.
  39. 39.A hall floor is 75 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.Find the HCF of 75 and 30.

Answer key

  1. 56
  2. 10
  3. 4
  4. 5
  5. 1
  6. 2
  7. 696
  8. 56
  9. 28.6
  10. 400
  11. 85
  12. 75
  13. 4
  14. 74
  15. 105
  16. 40
  17. 80
  18. 78
  19. 91.5
  20. 8
  21. 90
  22. 26
  23. 12
  24. 6
  25. 224
  26. 81
  27. 130
  28. 59200
  29. 35
  30. 45000
  31. 240
  32. 27
  33. 462
  34. 13.2
  35. 16
  36. 200
  37. 3/14
  38. 13
  39. 6
  40. 15

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