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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 257 · 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.Round 84.26 to one decimal place. =
  2. 2.11 : 3 = 33 : ?
  3. 3.What is 15% of 40?
  4. 4.Find the LCM of 28 and 32.
  5. 5.Two tanks hold 225 litres and 315 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.8.6 × 7 =
  7. 7.Find the LCM of 13, 6 and 2.
  8. 8.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 4, 15 or 8.
  9. 9.9 : 13 = 72 : ?
  10. 10.A hall floor is 210 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.A hall floor is 175 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  12. 12.Round 81.42 to one decimal place. =
  13. 13.If 5 kg of rice costs ₹250, how many kg can you buy for ₹550?
  14. 14.15.6 ÷ 3 =
  15. 15.Find the LCM of 13, 2 and 12.
  16. 16.What is the smallest number you must add to 237 so that it divides exactly by 4?
  17. 17.If 3 pens cost ₹12, how much do 20 pens cost (in ₹)?
  18. 18.Write 14/25 as a percent.
  19. 19.Round 18.49 to one decimal place. =
  20. 20.If 12 notebooks cost ₹168, how much do 15 notebooks cost (in ₹)?
  21. 21.The ratio of boys to girls in a class is 2 : 3. There are 8 boys. How many girls are there?
  22. 22.Find the HCF of 48 and 30.
  23. 23.A hall floor is 250 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  25. 25.Divide ₹234 between Sneha and Nisha in the ratio 7 : 2. How much does Sneha get (in ₹)?
  26. 26.6/11 + 4/6 =
  27. 27.A car goes 30 km on 3 litres of petrol. How far can it go on 5 litres (in km)?
  28. 28.If 5 kites cost ₹285, how much do 4 kites cost (in ₹)?
  29. 29.The HCF of two numbers is 4 and their LCM is 48. One of the numbers is 12. What is the other number?
  30. 30.The ratio of boys to girls in a class is 8 : 9. There are 24 boys. How many girls are there?
  31. 31.Which of these numbers divides exactly by 8? (a) 9615 (b) 2673 (c) 1744 (d) 6737
  32. 32.25% of a number is 105. What is the number?
  33. 33.The ratio of boys to girls in a class is 1 : 2. There are 4 boys. How many girls are there?
  34. 34.What is the smallest number you must add to 219 so that it divides exactly by 4?
  35. 35.Find the LCM of 15, 13 and 5.
  36. 36.Three temple bells ring every 15, 12 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.Which is closest to 602 ÷ 29? (a) 10 (b) 20 (c) 200 (d) 40
  38. 38.Write 1/2 as a percent.
  39. 39.Find the LCM of 5, 6 and 4.
  40. 40.What is the smallest number you must take away from 438 so that it divides exactly by 4?

Answer key

  1. 84.3
  2. 9
  3. 6
  4. 224
  5. 45
  6. 60.2
  7. 78
  8. 122
  9. 104
  10. 21
  11. 35
  12. 81.4
  13. 11
  14. 5.2
  15. 156
  16. 3
  17. 80
  18. 56
  19. 18.5
  20. 210
  21. 12
  22. 6
  23. 10
  24. 20
  25. 182
  26. 40/33
  27. 50
  28. 228
  29. 16
  30. 27
  31. 1744
  32. 420
  33. 8
  34. 1
  35. 195
  36. 60
  37. 20
  38. 50
  39. 60
  40. 2

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