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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 741 · 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.Which is closest to 400 × 58? (Round each number first.) (a) 48000 (b) 240000 (c) 2400 (d) 24000
  2. 2.What is the smallest number you must add to 145 so that it divides exactly by 8?
  3. 3.Which of these numbers divides exactly by 11? (a) 7483 (b) 9493 (c) 4729 (d) 4190
  4. 4.11 : 15 = 99 : ?
  5. 5.If 12 pencil boxes cost ₹528, how much do 11 pencil boxes cost (in ₹)?
  6. 6.Which is closest to 198 × 89? (Round each number first.) (a) 180000 (b) 36000 (c) 18000 (d) 1800
  7. 7.Round 80131 to the nearest hundred.
  8. 8.What is the smallest number you must add to 810 so that it divides exactly by 4?
  9. 9.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  10. 10.20 ÷ 4 × 8 + 3 =
  11. 11.Find the LCM of 6 and 27.
  12. 12.What is the smallest number you must add to 361 so that it divides exactly by 12?
  13. 13.What is the smallest number you must take away from 133 so that it divides exactly by 4?
  14. 14.12 : 4 = 60 : ?
  15. 15.Which of these numbers divides exactly by 11? (a) 9848 (b) 1656 (c) 7062 (d) 5354
  16. 16.Three temple bells ring every 30, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.Three temple bells ring every 10, 30 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.If 8 kg of rice costs ₹472, how many kg can you buy for ₹177?
  19. 19.What is 80% of 310?
  20. 20.Find the LCM of 9, 6 and 7.
  21. 21.How many factors does 92 have?
  22. 22.Find the smallest number bigger than 12 that leaves a remainder of 7 when divided by 10, 8 or 12.
  23. 23.12 : 6 = 108 : ?
  24. 24.Two tanks hold 40 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.Saanvi takes 80 seconds and Zoya takes 48 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?
  26. 26.If 4 pencil boxes cost ₹192, how much do 14 pencil boxes cost (in ₹)?
  27. 27.If 5 cricket balls cost ₹200, how much do 3 cricket balls cost (in ₹)?
  28. 28.The HCF of two numbers is 8 and their LCM is 360. One of the numbers is 40. What is the other number?
  29. 29.1/2 × 6/10 =
  30. 30.Write 39/50 as a percent.
  31. 31.Find the LCM of 25 and 20.
  32. 32.Round 53.88 to one decimal place. =
  33. 33.What is the smallest number you must take away from 889 so that it divides exactly by 12?
  34. 34.If 9 kg of rice costs ₹207, how many kg can you buy for ₹299?
  35. 35.The HCF of two numbers is 6 and their LCM is 120. One of the numbers is 30. What is the other number?
  36. 36.2 : 15 = 18 : ?
  37. 37.Which is closest to 495 + 102 + 699? (a) 1200 (b) 1300 (c) 1400 (d) 1500
  38. 38.A hall floor is 210 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.1/6 of 54 + 9 × 4 =
  40. 40.18.9 ÷ 9 =

Answer key

  1. 24000
  2. 7
  3. 9493
  4. 135
  5. 484
  6. 18000
  7. 80100
  8. 2
  9. 24
  10. 43
  11. 54
  12. 11
  13. 1
  14. 20
  15. 7062
  16. 120
  17. 120
  18. 3
  19. 248
  20. 126
  21. 6
  22. 127
  23. 54
  24. 20
  25. 240
  26. 672
  27. 120
  28. 72
  29. 3/10
  30. 78
  31. 100
  32. 53.9
  33. 1
  34. 13
  35. 24
  36. 135
  37. 1300
  38. 14
  39. 45
  40. 2.1

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