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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 518 · 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 7 : 1. There are 21 boys. How many girls are there?
  2. 2.Find the LCM of 4, 5 and 7.
  3. 3.1/10 + 5/9 =
  4. 4.How many factors does 56 have?
  5. 5.What is the smallest number you must add to 877 so that it divides exactly by 6?
  6. 6.Write 1/2 as a percent.
  7. 7.40% of a number is 112. What is the number?
  8. 8.Which of these numbers divides exactly by 4? (a) 1570 (b) 8924 (c) 1882 (d) 3410
  9. 9.If 3 bottles of juice cost ₹99, how much do 12 bottles of juice cost (in ₹)?
  10. 10.What is the smallest number you must add to 501 so that it divides exactly by 13?
  11. 11.Pooja scored 13 marks out of 20 in a test. What percentage did Pooja score?
  12. 12.Write 11/20 as a percent.
  13. 13.Which is closest to 500 × 21? (Round each number first.) (a) 100000 (b) 1000 (c) 20000 (d) 10000
  14. 14.35 + 9 × 3 − 5 =
  15. 15.40 + 12 × 11 − 25 =
  16. 16.Pooja scored 9 marks out of 25 in a test. What percentage did Pooja score?
  17. 17.Find the LCM of 9 and 5.
  18. 18.(6 + 11) × 3 − 28 =
  19. 19.Two tanks hold 105 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 4, 6 or 15.
  21. 21.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?
  22. 22.Which is closest to 396 × 60? (Round each number first.) (a) 2400 (b) 24000 (c) 240000 (d) 48000
  23. 23.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  24. 24.Aarav takes 36 seconds and Zoya takes 80 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?
  25. 25.Find the LCM of 6 and 27.
  26. 26.3/12 + 1/7 =
  27. 27.Find the HCF of 30 and 70.
  28. 28.Divide ₹275 between Rahul and Tara in the ratio 8 : 3. How much does Rahul get (in ₹)?
  29. 29.The HCF of two numbers is 6 and their LCM is 90. One of the numbers is 18. What is the other number?
  30. 30.What is 5/7 of 14 students?
  31. 31.Which is closest to 3007 ÷ 49? (a) 600 (b) 120 (c) 30 (d) 60
  32. 32.Find the LCM of 8, 14 and 3.
  33. 33.Find the smallest number bigger than 10 that leaves a remainder of 3 when divided by 10, 8 or 5.
  34. 34.Find the HCF of 36 and 24.
  35. 35.88 ÷ 8 × 5 + 27 =
  36. 36.Find the HCF of 12 and 21.
  37. 37.Find the LCM of 36 and 28.
  38. 38.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?
  39. 39.48 ÷ 4 × 8 + 10 =
  40. 40.Which is closest to 804 + 295 + 401? (a) 1700 (b) 1600 (c) 1500 (d) 1400

Answer key

  1. 3
  2. 140
  3. 59/90
  4. 8
  5. 5
  6. 50
  7. 280
  8. 8924
  9. 396
  10. 6
  11. 65
  12. 55
  13. 10000
  14. 57
  15. 147
  16. 36
  17. 45
  18. 23
  19. 15
  20. 63
  21. 60
  22. 24000
  23. 12
  24. 720
  25. 54
  26. 11/28
  27. 10
  28. 200
  29. 30
  30. 10
  31. 60
  32. 168
  33. 43
  34. 12
  35. 82
  36. 3
  37. 252
  38. 56
  39. 106
  40. 1500

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