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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 667 · 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.Three temple bells ring every 15, 5 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Three temple bells ring every 8, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.The ratio of boys to girls in a class is 3 : 8. There are 12 boys. How many girls are there?
  4. 4.Find the HCF of 99 and 55.
  5. 5.Find the HCF of 126 and 56.
  6. 6.Which is closest to 797 × 21? (Round each number first.) (a) 160000 (b) 32000 (c) 16000 (d) 1600
  7. 7.2.19 + 2.8 =
  8. 8.Which is closest to 204 × 61? (Round each number first.) (a) 24000 (b) 1200 (c) 12000 (d) 120000
  9. 9.3/5 + 6/7 =
  10. 10.A hall floor is 200 cm long and 175 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.How many factors does 88 have?
  12. 12.Round 85.53 to one decimal place. =
  13. 13.If 11 kites cost ₹198, how much do 5 kites cost (in ₹)?
  14. 14.1/4 of 32 + 4 × 8 =
  15. 15.Find the LCM of 7 and 3.
  16. 16.33 + 9 × 2 − 7 =
  17. 17.6.4 × 7 =
  18. 18.Which is closest to 505 + 98 + 197? (a) 700 (b) 900 (c) 1000 (d) 800
  19. 19.The ratio of boys to girls in a class is 4 : 9. There are 36 boys. How many girls are there?
  20. 20.Find the HCF of 60 and 24.
  21. 21.Two tanks hold 135 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  22. 22.(5 + 20) × 3 − 6 =
  23. 23.2.19 + 4.9 =
  24. 24.Divide ₹72 between Rohan and Ishaan in the ratio 1 : 7. How much does Rohan get (in ₹)?
  25. 25.Pooja scored 7 marks out of 20 in a test. What percentage did Pooja score?
  26. 26.4/9 × 2/5 =
  27. 27.How many factors does 56 have?
  28. 28.A car goes 198 km on 9 litres of petrol. How far can it go on 2 litres (in km)?
  29. 29.What percent of 40 is 14?
  30. 30.Which is closest to 596 × 50? (Round each number first.) (a) 30000 (b) 60000 (c) 3000 (d) 300000
  31. 31.Rohan scored 29 marks out of 50 in a test. What percentage did Rohan score?
  32. 32.What is the smallest number you must take away from 315 so that it divides exactly by 6?
  33. 33.How many factors does 30 have?
  34. 34.120% of a number is 78. What is the number?
  35. 35.9.7 × 7 =
  36. 36.The HCF of two numbers is 3 and their LCM is 135. One of the numbers is 27. What is the other number?
  37. 37.1/6 + 1/3 =
  38. 38.Find the LCM of 24 and 42.
  39. 39.Three temple bells ring every 15, 18 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.1/10 × 2/12 =

Answer key

  1. 60
  2. 120
  3. 32
  4. 11
  5. 14
  6. 16000
  7. 4.99
  8. 12000
  9. 51/35
  10. 56
  11. 8
  12. 85.5
  13. 90
  14. 40
  15. 21
  16. 44
  17. 44.8
  18. 800
  19. 81
  20. 12
  21. 15
  22. 69
  23. 7.09
  24. 9
  25. 35
  26. 8/45
  27. 8
  28. 44
  29. 35
  30. 30000
  31. 58
  32. 3
  33. 8
  34. 65
  35. 67.9
  36. 15
  37. 1/2
  38. 168
  39. 90
  40. 1/60

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