← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 410 · 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.A car goes 40 km on 2 litres of petrol. How far can it go on 32 litres (in km)?
  2. 2.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  3. 3.1/2 − 2/7 =
  4. 4.Write 17/25 as a percent.
  5. 5.The ratio of boys to girls in a class is 1 : 2. There are 10 boys. How many girls are there?
  6. 6.If 2 cricket balls cost ₹76, how much do 19 cricket balls cost (in ₹)?
  7. 7.The HCF of two numbers is 9 and their LCM is 135. One of the numbers is 45. What is the other number?
  8. 8.Round 36028 to the nearest hundred.
  9. 9.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  10. 10.Find the HCF of 8 and 20.
  11. 11.Rahul scored 30 marks out of 40 in a test. What percentage did Rahul score?
  12. 12.3/4 + 1/2 =
  13. 13.4 painters can paint a school in 10 days. How many days would 2 painters take, working at the same speed?
  14. 14.Three temple bells ring every 8, 6 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.What is the smallest number you must add to 483 so that it divides exactly by 4?
  16. 16.(8 + 2) × 4 − 14 =
  17. 17.What is 5/8 of 224 km?
  18. 18.What percent of 40 is 14?
  19. 19.The HCF of two numbers is 2 and their LCM is 84. One of the numbers is 14. What is the other number?
  20. 20.Find the LCM of 14 and 18.
  21. 21.Find the LCM of 6, 14 and 10.
  22. 22.The ratio of boys to girls in a class is 7 : 8. There are 63 boys. How many girls are there?
  23. 23.Find the LCM of 6, 9 and 3.
  24. 24.If 2 cricket balls cost ₹110, how much do 19 cricket balls cost (in ₹)?
  25. 25.What is 1/3 of 51 students?
  26. 26.The ratio of boys to girls in a class is 3 : 4. There are 24 boys. How many girls are there?
  27. 27.A car goes 120 km on 5 litres of petrol. How far can it go on 16 litres (in km)?
  28. 28.Find the LCM of 24 and 21.
  29. 29.17.5 ÷ 7 =
  30. 30.Arjun takes 50 seconds and Nisha 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?
  31. 31.Find the HCF of 20 and 45.
  32. 32.Round 82600 to the nearest thousand.
  33. 33.Find the LCM of 25 and 45.
  34. 34.What is 80% of 535?
  35. 35.Two tanks hold 50 litres and 125 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.Which is closest to 1496 ÷ 49? (a) 300 (b) 60 (c) 15 (d) 30
  37. 37.1/3 × 6/9 =
  38. 38.The HCF of two numbers is 3 and their LCM is 63. One of the numbers is 21. What is the other number?
  39. 39.What is the smallest number you must take away from 623 so that it divides exactly by 3?
  40. 40.If 9 kg of rice costs ₹450, how many kg can you buy for ₹100?

Answer key

  1. 640
  2. 36
  3. 3/14
  4. 68
  5. 20
  6. 722
  7. 27
  8. 36000
  9. 144
  10. 4
  11. 75
  12. 5/4
  13. 20
  14. 120
  15. 1
  16. 26
  17. 140
  18. 35
  19. 12
  20. 126
  21. 210
  22. 72
  23. 18
  24. 1045
  25. 17
  26. 32
  27. 384
  28. 168
  29. 2.5
  30. 300
  31. 5
  32. 83000
  33. 225
  34. 428
  35. 25
  36. 30
  37. 2/9
  38. 9
  39. 2
  40. 2

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