← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 400 · 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. 1.9 painters can paint a school in 22 days. How many days would 11 painters take, working at the same speed?
  2. 2.What is the smallest number you must take away from 121 so that it divides exactly by 3?
  3. 3.Round 24869 to the nearest ten.
  4. 4.Round 11818 to the nearest hundred.
  5. 5.5/8 + 3/6 =
  6. 6.3 ÷ 2 =
  7. 7.5.5 × 8 =
  8. 8.What percent of 25 is 13?
  9. 9.1/7 of 77 + 8 × 7 =
  10. 10.Find the LCM of 18 and 48.
  11. 11.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  12. 12.Find the LCM of 8 and 20.
  13. 13.Three temple bells ring every 20, 10 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 4, 10 or 15.
  15. 15.Find the HCF of 96 and 108.
  16. 16.A car goes 40 km on 5 litres of petrol. How far can it go on 11 litres (in km)?
  17. 17.What is 4/7 of 140 km?
  18. 18.What is the smallest number you must add to 605 so that it divides exactly by 6?
  19. 19.How many factors does 76 have?
  20. 20.8 painters can paint a school in 13 days. How many days would 4 painters take, working at the same speed?
  21. 21.Meera takes 40 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?
  22. 22.6 : 4 = 36 : ?
  23. 23.Tara takes 75 seconds and Rahul takes 90 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?
  24. 24.If 6 pencil boxes cost ₹120, how much do 10 pencil boxes cost (in ₹)?
  25. 25.What is the smallest number you must add to 511 so that it divides exactly by 13?
  26. 26.26.7 ÷ 3 =
  27. 27.How many factors does 94 have?
  28. 28.Round 75382 to the nearest ten.
  29. 29.What is the smallest number you must add to 917 so that it divides exactly by 13?
  30. 30.1/2 of 24 + 2 × 5 =
  31. 31.If 2 kg of rice costs ₹140, how many kg can you buy for ₹700?
  32. 32.The HCF of two numbers is 3 and their LCM is 84. One of the numbers is 12. What is the other number?
  33. 33.Two tanks hold 20 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.Two tanks hold 20 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.What is the smallest number you must take away from 721 so that it divides exactly by 6?
  36. 36.Round 1662 to the nearest ten.
  37. 37.12 painters can paint a school in 25 days. How many days would 5 painters take, working at the same speed?
  38. 38.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 32. What is the other number?
  39. 39.73 − 54 ÷ 6 × 5 =
  40. 40.How many factors does 35 have?

Answer key

  1. 18
  2. 1
  3. 24870
  4. 11800
  5. 9/8
  6. 1.5
  7. 44
  8. 52
  9. 67
  10. 144
  11. 75
  12. 40
  13. 60
  14. 63
  15. 12
  16. 88
  17. 80
  18. 1
  19. 6
  20. 26
  21. 200
  22. 24
  23. 450
  24. 200
  25. 9
  26. 8.9
  27. 4
  28. 75380
  29. 6
  30. 22
  31. 10
  32. 21
  33. 10
  34. 5
  35. 1
  36. 1660
  37. 60
  38. 36
  39. 28
  40. 4

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