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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 471 · 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.The ratio of boys to girls in a class is 1 : 5. There are 10 boys. How many girls are there?
  2. 2.11 + 3 × 8 − 1 =
  3. 3.What is 3/4 of 52 litres?
  4. 4.Nisha takes 40 seconds and Vivaan takes 45 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  5. 5.What is the smallest number you must add to 887 so that it divides exactly by 11?
  6. 6.Which is closest to 500 × 82? (Round each number first.) (a) 40000 (b) 80000 (c) 400000 (d) 4000
  7. 7.Which is closest to 798 × 28? (Round each number first.) (a) 240000 (b) 2400 (c) 24000 (d) 48000
  8. 8.Divide ₹660 between Ishaan and Aditya in the ratio 7 : 5. How much does Aditya get (in ₹)?
  9. 9.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.What is 80% of 120?
  11. 11.What is 15% of 140?
  12. 12.What is the smallest number you must add to 503 so that it divides exactly by 12?
  13. 13.40 − 36 ÷ 6 × 3 =
  14. 14.What is 75% of 496?
  15. 15.How many factors does 17 have?
  16. 16.7/8 − 1/10 =
  17. 17.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  18. 18.How many factors does 47 have?
  19. 19.Which is closest to 803 + 801 + 500? (a) 2200 (b) 2100 (c) 2000 (d) 2300
  20. 20.Which is closest to 1801 ÷ 19? (a) 180 (b) 45 (c) 90 (d) 900
  21. 21.Which of these numbers divides exactly by 8? (a) 1675 (b) 8368 (c) 4071 (d) 3579
  22. 22.A car goes 80 km on 5 litres of petrol. How far can it go on 30 litres (in km)?
  23. 23.11.9 ÷ 7 =
  24. 24.Divide ₹371 between Ishaan and Sneha in the ratio 6 : 1. How much does Sneha get (in ₹)?
  25. 25.Write 8/25 as a percent.
  26. 26.6.51 + 3.2 =
  27. 27.What is the smallest number you must add to 548 so that it divides exactly by 3?
  28. 28.88 − 72 ÷ 9 × 6 =
  29. 29.What percent of 20 is 14?
  30. 30.What is 4/7 of 119 students?
  31. 31.What is 20% of 115?
  32. 32.Divide ₹490 between Saanvi and Meera in the ratio 9 : 1. How much does Meera get (in ₹)?
  33. 33.What is the smallest number you must take away from 169 so that it divides exactly by 11?
  34. 34.1/4 + 2/6 =
  35. 35.Two tanks hold 280 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.4/5 − 7/9 =
  37. 37.Round 69.47 to one decimal place. =
  38. 38.Which of these numbers divides exactly by 9? (a) 5642 (b) 8511 (c) 7020 (d) 2111
  39. 39.Find the LCM of 15, 5 and 11.
  40. 40.If 5 kites cost ₹40, how much do 12 kites cost (in ₹)?

Answer key

  1. 50
  2. 34
  3. 39
  4. 360
  5. 4
  6. 40000
  7. 24000
  8. 275
  9. 20
  10. 96
  11. 21
  12. 1
  13. 22
  14. 372
  15. 2
  16. 31/40
  17. 45
  18. 2
  19. 2100
  20. 90
  21. 8368
  22. 480
  23. 1.7
  24. 53
  25. 32
  26. 9.71
  27. 1
  28. 40
  29. 70
  30. 68
  31. 23
  32. 49
  33. 4
  34. 7/12
  35. 40
  36. 1/45
  37. 69.5
  38. 7020
  39. 165
  40. 96

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