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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 483 · 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.Two tanks hold 100 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.20% of a number is 83. What is the number?
  3. 3.Find the LCM of 6, 5 and 10.
  4. 4.If 12 pens cost ₹420, how much do 5 pens cost (in ₹)?
  5. 5.If 5 kg of rice costs ₹280, how many kg can you buy for ₹112?
  6. 6.19 + 5 × 3 − 15 =
  7. 7.Find the LCM of 7, 2 and 8.
  8. 8.69.3 ÷ 7 =
  9. 9.A hall floor is 250 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.The ratio of boys to girls in a class is 8 : 3. There are 64 boys. How many girls are there?
  11. 11.What is the smallest number you must take away from 552 so that it divides exactly by 7?
  12. 12.If 6 kg of rice costs ₹432, how many kg can you buy for ₹792?
  13. 13.Divide ₹238 between Ananya and Farhan in the ratio 3 : 4. How much does Ananya get (in ₹)?
  14. 14.9 : 5 = 18 : ?
  15. 15.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?
  16. 16.6 : 12 = 18 : ?
  17. 17.Three temple bells ring every 6, 18 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Which of these numbers divides exactly by 8? (a) 6761 (b) 3624 (c) 2617 (d) 5859
  19. 19.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 4, 10 or 9.
  20. 20.What is 10% of 250?
  21. 21.Round 64.33 to one decimal place. =
  22. 22.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 3, 6 or 9.
  23. 23.Find the HCF of 12 and 54.
  24. 24.Which is closest to 1191 ÷ 41? (a) 60 (b) 30 (c) 300 (d) 15
  25. 25.2/6 + 1/2 =
  26. 26.22 − 28 ÷ 4 × 3 =
  27. 27.A car goes 39 km on 3 litres of petrol. How far can it go on 20 litres (in km)?
  28. 28.1/9 − 1/10 =
  29. 29.Three temple bells ring every 18, 6 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.Find the LCM of 8, 14 and 6.
  31. 31.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  32. 32.Find the HCF of 30 and 54.
  33. 33.Aarav scored 18 marks out of 20 in a test. What percentage did Aarav score?
  34. 34.Which of these numbers divides exactly by 8? (a) 1088 (b) 1364 (c) 2974 (d) 5639
  35. 35.20 ÷ 5 × 7 + 21 =
  36. 36.Which is closest to 3595 ÷ 41? (a) 900 (b) 45 (c) 90 (d) 180
  37. 37.Two tanks hold 100 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  38. 38.10 : 9 = 80 : ?
  39. 39.Find the LCM of 36 and 8.
  40. 40.What is the smallest number you must take away from 913 so that it divides exactly by 4?

Answer key

  1. 20
  2. 415
  3. 30
  4. 175
  5. 2
  6. 19
  7. 56
  8. 9.9
  9. 15
  10. 24
  11. 6
  12. 11
  13. 102
  14. 10
  15. 10
  16. 36
  17. 90
  18. 3624
  19. 181
  20. 25
  21. 64.3
  22. 19
  23. 6
  24. 30
  25. 5/6
  26. 1
  27. 260
  28. 1/90
  29. 90
  30. 168
  31. 8
  32. 6
  33. 90
  34. 1088
  35. 49
  36. 90
  37. 25
  38. 72
  39. 72
  40. 1

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