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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 186 · 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 LCM of 12 and 8.
  2. 2.A hostel has enough food for 2 students for 28 days. How many days will the same food last for 8 students?
  3. 3.What is the smallest number you must take away from 211 so that it divides exactly by 6?
  4. 4.The HCF of two numbers is 3 and their LCM is 72. One of the numbers is 9. What is the other number?
  5. 5.Find the LCM of 25 and 30.
  6. 6.3/8 of 88 + 6 × 3 =
  7. 7.A hall floor is 225 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.Write 1/4 as a percent.
  9. 9.7 × (11 − 4) + 36 ÷ 4 =
  10. 10.Round 69.27 to one decimal place. =
  11. 11.What is the smallest number you must add to 102 so that it divides exactly by 11?
  12. 12.Which of these numbers divides exactly by 4? (a) 3388 (b) 5522 (c) 1227 (d) 2897
  13. 13.The ratio of boys to girls in a class is 3 : 2. There are 15 boys. How many girls are there?
  14. 14.Two tanks hold 320 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.1/4 × 7/11 =
  16. 16.How many factors does 59 have?
  17. 17.Divide ₹336 between Sneha and Pooja in the ratio 5 : 1. How much does Sneha get (in ₹)?
  18. 18.4 : 11 = 20 : ?
  19. 19.What is the smallest number you must add to 593 so that it divides exactly by 12?
  20. 20.7/10 − 6/9 =
  21. 21.If 9 kg of rice costs ₹711, how many kg can you buy for ₹316?
  22. 22.A car goes 126 km on 9 litres of petrol. How far can it go on 28 litres (in km)?
  23. 23.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 6 or 4.
  24. 24.2/11 × 1/8 =
  25. 25.Find the HCF of 36 and 28.
  26. 26.9/10 − 1/4 =
  27. 27.Two tanks hold 320 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  28. 28.Which is closest to 400 × 69? (Round each number first.) (a) 280000 (b) 56000 (c) 2800 (d) 28000
  29. 29.Write 7/50 as a percent.
  30. 30.What is the smallest number you must take away from 893 so that it divides exactly by 8?
  31. 31.Find the HCF of 120 and 75.
  32. 32.Which of these numbers divides exactly by 6? (a) 2158 (b) 6226 (c) 3190 (d) 9528
  33. 33.Find the LCM of 12 and 54.
  34. 34.Find the LCM of 4, 15 and 12.
  35. 35.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  36. 36.Which of these numbers divides exactly by 4? (a) 2656 (b) 1990 (c) 8789 (d) 8041
  37. 37.5/11 + 3/4 =
  38. 38.If 7 pens cost ₹119, how much do 4 pens cost (in ₹)?
  39. 39.Which is closest to 396 + 296 + 402? (a) 1200 (b) 1000 (c) 1300 (d) 1100
  40. 40.Find the HCF of 18 and 27.

Answer key

  1. 24
  2. 7
  3. 1
  4. 24
  5. 150
  6. 51
  7. 10
  8. 25
  9. 58
  10. 69.3
  11. 8
  12. 3388
  13. 10
  14. 40
  15. 7/44
  16. 2
  17. 280
  18. 55
  19. 7
  20. 1/30
  21. 4
  22. 392
  23. 63
  24. 1/44
  25. 4
  26. 13/20
  27. 40
  28. 28000
  29. 14
  30. 5
  31. 15
  32. 9528
  33. 108
  34. 60
  35. 112
  36. 2656
  37. 53/44
  38. 68
  39. 1100
  40. 9

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