← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 767 · 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.What is the smallest number you must take away from 661 so that it divides exactly by 4?
  2. 2.Find the HCF of 63 and 36.
  3. 3.Find the LCM of 18 and 16.
  4. 4.A car goes 144 km on 8 litres of petrol. How far can it go on 9 litres (in km)?
  5. 5.Which is closest to 796 × 48? (Round each number first.) (a) 4000 (b) 80000 (c) 40000 (d) 400000
  6. 6.Round 20.89 to one decimal place. =
  7. 7.What percent of 500 is 400?
  8. 8.Three temple bells ring every 8, 24 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.Two tanks hold 25 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  10. 10.How many factors does 53 have?
  11. 11.Three temple bells ring every 15, 6 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.How many factors does 89 have?
  13. 13.1/12 + 1/4 =
  14. 14.A car goes 72 km on 6 litres of petrol. How far can it go on 39 litres (in km)?
  15. 15.What is 30% of 210?
  16. 16.Find the LCM of 2, 9 and 4.
  17. 17.11 + 7 × 10 − 3 =
  18. 18.45 + 2 × 6 − 10 =
  19. 19.If 6 cricket balls cost ₹354, how much do 8 cricket balls cost (in ₹)?
  20. 20.What is the smallest number you must take away from 937 so that it divides exactly by 6?
  21. 21.2/3 + 2/7 =
  22. 22.Find the HCF of 81 and 18.
  23. 23.8/12 + 7/9 =
  24. 24.Two tanks hold 30 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.9 : 13 = 63 : ?
  26. 26.Which is closest to 803 × 60? (Round each number first.) (a) 480000 (b) 4800 (c) 96000 (d) 48000
  27. 27.Isha takes 45 seconds and Arjun takes 60 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?
  28. 28.Round 59.41 to one decimal place. =
  29. 29.Which is closest to 404 ÷ 21? (a) 40 (b) 10 (c) 20 (d) 200
  30. 30.Which is closest to 407 ÷ 19? (a) 40 (b) 20 (c) 200 (d) 10
  31. 31.5.1 ÷ 3 =
  32. 32.51 − 14 ÷ 2 × 6 =
  33. 33.The ratio of boys to girls in a class is 5 : 1. There are 25 boys. How many girls are there?
  34. 34.11/12 + 4/8 =
  35. 35.How many factors does 57 have?
  36. 36.Three temple bells ring every 6, 10 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.The HCF of two numbers is 8 and their LCM is 160. One of the numbers is 32. What is the other number?
  38. 38.What percent of 250 is 90?
  39. 39.Find the LCM of 10, 3 and 12.
  40. 40.Which is closest to 798 × 20? (Round each number first.) (a) 1600 (b) 16000 (c) 160000 (d) 32000

Answer key

  1. 1
  2. 9
  3. 144
  4. 162
  5. 40000
  6. 20.9
  7. 80
  8. 72
  9. 5
  10. 2
  11. 60
  12. 2
  13. 1/3
  14. 468
  15. 63
  16. 36
  17. 78
  18. 47
  19. 472
  20. 1
  21. 20/21
  22. 9
  23. 13/9
  24. 15
  25. 91
  26. 48000
  27. 180
  28. 59.4
  29. 20
  30. 20
  31. 1.7
  32. 9
  33. 5
  34. 17/12
  35. 4
  36. 90
  37. 40
  38. 36
  39. 60
  40. 16000

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