← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 762 · 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.Which is closest to 95 + 505 + 96? (a) 800 (b) 600 (c) 900 (d) 700
  2. 2.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 8. What is the other number?
  3. 3.Two tanks hold 80 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.Three temple bells ring every 15, 30 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.The ratio of boys to girls in a class is 3 : 7. There are 9 boys. How many girls are there?
  6. 6.How many factors does 88 have?
  7. 7.Three temple bells ring every 30, 4 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.What is the smallest number you must take away from 297 so that it divides exactly by 6?
  9. 9.A hall floor is 120 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.What is the smallest number you must add to 733 so that it divides exactly by 3?
  11. 11.How many factors does 63 have?
  12. 12.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 32. What is the other number?
  13. 13.If 3 cricket balls cost ₹15, how much do 17 cricket balls cost (in ₹)?
  14. 14.How many factors does 77 have?
  15. 15.41 + 8 × 2 − 5 =
  16. 16.Three temple bells ring every 15, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.4 × (14 − 4) + 8 ÷ 2 =
  18. 18.If 9 kg of rice costs ₹306, how many kg can you buy for ₹68?
  19. 19.Find the LCM of 2, 8 and 7.
  20. 20.1/5 of 15 + 5 × 9 =
  21. 21.12 painters can paint a school in 30 days. How many days would 15 painters take, working at the same speed?
  22. 22.A hostel has enough food for 10 students for 23 days. How many days will the same food last for 23 students?
  23. 23.The HCF of two numbers is 9 and their LCM is 360. One of the numbers is 72. What is the other number?
  24. 24.If 6 erasers cost ₹198, how much do 16 erasers cost (in ₹)?
  25. 25.Round 80.11 to one decimal place. =
  26. 26.Two tanks hold 135 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.The HCF of two numbers is 5 and their LCM is 50. One of the numbers is 25. What is the other number?
  28. 28.What is the smallest number you must take away from 532 so that it divides exactly by 11?
  29. 29.5/8 × 1/2 =
  30. 30.Find the LCM of 2, 14 and 15.
  31. 31.Round 2683 to the nearest hundred.
  32. 32.Divide ₹368 between Ishaan and Rahul in the ratio 1 : 7. How much does Rahul get (in ₹)?
  33. 33.65 − 16 ÷ 2 × 8 =
  34. 34.Write 1/2 as a percent.
  35. 35.Round 96.54 to one decimal place. =
  36. 36.Find the LCM of 9 and 7.
  37. 37.Find the LCM of 7, 9 and 3.
  38. 38.Which is closest to 1603 ÷ 21? (a) 800 (b) 160 (c) 80 (d) 40
  39. 39.A hall floor is 350 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.43 + 12 × 3 − 10 =

Answer key

  1. 700
  2. 18
  3. 20
  4. 120
  5. 21
  6. 8
  7. 120
  8. 3
  9. 6
  10. 2
  11. 6
  12. 36
  13. 85
  14. 4
  15. 52
  16. 120
  17. 44
  18. 2
  19. 56
  20. 48
  21. 24
  22. 10
  23. 45
  24. 528
  25. 80.1
  26. 15
  27. 10
  28. 4
  29. 5/16
  30. 210
  31. 2700
  32. 322
  33. 1
  34. 50
  35. 96.5
  36. 63
  37. 63
  38. 80
  39. 14
  40. 69

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