← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 684 · 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 5 : 6. There are 50 boys. How many girls are there?
  2. 2.What is the smallest number you must add to 372 so that it divides exactly by 7?
  3. 3.12 + 10 × 11 − 8 =
  4. 4.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 9, 8 or 4.
  5. 5.How many factors does 30 have?
  6. 6.Find the HCF of 78 and 65.
  7. 7.What is the smallest number you must add to 123 so that it divides exactly by 12?
  8. 8.Find the LCM of 7, 3 and 2.
  9. 9.Which is closest to 3001 ÷ 49? (a) 60 (b) 600 (c) 120 (d) 30
  10. 10.(13 + 13) × 4 − 1 =
  11. 11.Rohan takes 36 seconds and Dev 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?
  12. 12.Find the LCM of 3, 9 and 4.
  13. 13.11/12 − 2/4 =
  14. 14.The HCF of two numbers is 6 and their LCM is 216. One of the numbers is 54. What is the other number?
  15. 15.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  16. 16.If 6 kg of rice costs ₹510, how many kg can you buy for ₹850?
  17. 17.Three temple bells ring every 15, 20 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.37.1 ÷ 7 =
  19. 19.Meera takes 80 seconds and Karan takes 50 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?
  20. 20.Three temple bells ring every 8, 12 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.Find the HCF of 12 and 8.
  22. 22.Find the LCM of 13, 2 and 6.
  23. 23.1/2 − 3/7 =
  24. 24.Find the LCM of 5 and 2.
  25. 25.Find the LCM of 10, 4 and 8.
  26. 26.Find the LCM of 3, 5 and 13.
  27. 27.What is the smallest number you must take away from 673 so that it divides exactly by 12?
  28. 28.The ratio of boys to girls in a class is 9 : 2. There are 27 boys. How many girls are there?
  29. 29.What is 5% of 140?
  30. 30.Two tanks hold 140 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.What is the smallest number you must take away from 227 so that it divides exactly by 13?
  32. 32.How many factors does 84 have?
  33. 33.How many factors does 12 have?
  34. 34.1.21 + 2.1 =
  35. 35.(4 + 13) × 3 − 16 =
  36. 36.24 ÷ 6 × 5 + 27 =
  37. 37.6 : 5 = 24 : ?
  38. 38.5% of a number is 27. What is the number?
  39. 39.The HCF of two numbers is 3 and their LCM is 90. One of the numbers is 15. What is the other number?
  40. 40.1/4 − 1/10 =

Answer key

  1. 60
  2. 6
  3. 114
  4. 74
  5. 8
  6. 13
  7. 9
  8. 42
  9. 60
  10. 103
  11. 180
  12. 36
  13. 5/12
  14. 24
  15. 28
  16. 10
  17. 60
  18. 5.3
  19. 400
  20. 72
  21. 4
  22. 78
  23. 1/14
  24. 10
  25. 40
  26. 195
  27. 1
  28. 6
  29. 7
  30. 20
  31. 6
  32. 12
  33. 6
  34. 3.31
  35. 35
  36. 47
  37. 20
  38. 540
  39. 18
  40. 3/20

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude