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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 487 · 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?

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  1. 1.Two tanks hold 350 litres and 400 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.Which is closest to 801 × 60? (Round each number first.) (a) 4800 (b) 48000 (c) 480000 (d) 96000
  3. 3.Three temple bells ring every 10, 30 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.6/9 × 7/10 =
  5. 5.1/10 − 1/12 =
  6. 6.Find the LCM of 4, 12 and 3.
  7. 7.A hall floor is 480 cm long and 420 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.What is the smallest number you must take away from 277 so that it divides exactly by 12?
  9. 9.3/9 − 2/11 =
  10. 10.3.3 × 8 =
  11. 11.What is 15% of 280?
  12. 12.Which is closest to 898 × 28? (Round each number first.) (a) 2700 (b) 27000 (c) 270000 (d) 54000
  13. 13.Write 13/25 as a percent.
  14. 14.What is the smallest number you must take away from 723 so that it divides exactly by 8?
  15. 15.A car goes 120 km on 10 litres of petrol. How far can it go on 38 litres (in km)?
  16. 16.29 + 5 × 3 − 2 =
  17. 17.Find the LCM of 18 and 8.
  18. 18.Two tanks hold 200 litres and 160 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.7/9 + 3/4 =
  20. 20.What is 1/2 of 6 kg?
  21. 21.Two tanks hold 225 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  22. 22.Divide ₹128 between Diya and Manav in the ratio 3 : 5. How much does Manav get (in ₹)?
  23. 23.Which is closest to 698 × 89? (Round each number first.) (a) 6300 (b) 630000 (c) 63000 (d) 126000
  24. 24.20 ÷ 5 × 2 + 13 =
  25. 25.A hostel has enough food for 3 students for 23 days. How many days will the same food last for 23 students?
  26. 26.If 5 pencil boxes cost ₹170, how much do 18 pencil boxes cost (in ₹)?
  27. 27.Round 77.11 to one decimal place. =
  28. 28.16 + 4 × 5 − 14 =
  29. 29.23 − 27 ÷ 9 × 7 =
  30. 30.25% of a number is 24. What is the number?
  31. 31.What is the smallest number you must take away from 142 so that it divides exactly by 8?
  32. 32.108 ÷ 9 × 8 + 21 =
  33. 33.(13 + 20) × 4 − 12 =
  34. 34.Which is closest to 697 × 21? (Round each number first.) (a) 140000 (b) 1400 (c) 14000 (d) 28000
  35. 35.What is the smallest number you must take away from 266 so that it divides exactly by 9?
  36. 36.34 − 18 ÷ 9 × 3 =
  37. 37.A hostel has enough food for 10 students for 10 days. How many days will the same food last for 4 students?
  38. 38.What percent of 250 is 185?
  39. 39.Write 4/5 as a percent.
  40. 40.19 − 6 ÷ 2 × 4 =

Answer key

  1. 50
  2. 48000
  3. 60
  4. 7/15
  5. 1/60
  6. 12
  7. 56
  8. 1
  9. 5/33
  10. 26.4
  11. 42
  12. 27000
  13. 52
  14. 3
  15. 456
  16. 42
  17. 72
  18. 40
  19. 55/36
  20. 3
  21. 45
  22. 80
  23. 63000
  24. 21
  25. 3
  26. 612
  27. 77.1
  28. 22
  29. 2
  30. 96
  31. 6
  32. 117
  33. 120
  34. 14000
  35. 5
  36. 28
  37. 25
  38. 74
  39. 80
  40. 7

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