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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 590 · 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. 1.2 painters can paint a school in 24 days. How many days would 8 painters take, working at the same speed?
  2. 2.A hall floor is 400 cm long and 350 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  3. 3.Ananya scored 68 marks out of 80 in a test. What percentage did Ananya score?
  4. 4.The HCF of two numbers is 5 and their LCM is 315. One of the numbers is 35. What is the other number?
  5. 5.Find the HCF of 77 and 44.
  6. 6.A hostel has enough food for 10 students for 14 days. How many days will the same food last for 4 students?
  7. 7.What is the smallest number you must add to 739 so that it divides exactly by 3?
  8. 8.A hall floor is 135 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  9. 9.Write 14/25 as a percent.
  10. 10.A hall floor is 160 cm long and 140 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.2/3 of 30 + 2 × 3 =
  12. 12.Two tanks hold 270 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.7/9 × 6/8 =
  14. 14.What is the smallest number you must take away from 173 so that it divides exactly by 3?
  15. 15.Find the HCF of 40 and 24.
  16. 16.Find the LCM of 3, 7 and 5.
  17. 17.The ratio of boys to girls in a class is 9 : 1. There are 63 boys. How many girls are there?
  18. 18.22.8 ÷ 3 =
  19. 19.A car goes 40 km on 4 litres of petrol. How far can it go on 6 litres (in km)?
  20. 20.What is the smallest number you must add to 834 so that it divides exactly by 4?
  21. 21.How many factors does 36 have?
  22. 22.4 : 13 = 12 : ?
  23. 23.Find the LCM of 12 and 9.
  24. 24.Find the HCF of 8 and 12.
  25. 25.4/6 + 1/2 =
  26. 26.4/7 − 2/4 =
  27. 27.Round 17887 to the nearest hundred.
  28. 28.150% of a number is 750. What is the number?
  29. 29.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 6 or 8.
  30. 30.Divide ₹51 between Dev and Arjun in the ratio 2 : 1. How much does Arjun get (in ₹)?
  31. 31.Three temple bells ring every 8, 15 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.A hall floor is 140 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.50% of a number is 164. What is the number?
  34. 34.A car goes 108 km on 6 litres of petrol. How far can it go on 30 litres (in km)?
  35. 35.Round 40814 to the nearest thousand.
  36. 36.The ratio of boys to girls in a class is 1 : 4. There are 3 boys. How many girls are there?
  37. 37.What is the smallest number you must add to 790 so that it divides exactly by 4?
  38. 38.What is the smallest number you must add to 615 so that it divides exactly by 8?
  39. 39.5/8 + 6/9 =
  40. 40.Find the LCM of 14 and 18.

Answer key

  1. 6
  2. 56
  3. 85
  4. 45
  5. 11
  6. 35
  7. 2
  8. 6
  9. 56
  10. 56
  11. 26
  12. 30
  13. 7/12
  14. 2
  15. 8
  16. 105
  17. 7
  18. 7.6
  19. 60
  20. 2
  21. 9
  22. 39
  23. 36
  24. 4
  25. 7/6
  26. 1/14
  27. 17900
  28. 500
  29. 121
  30. 17
  31. 120
  32. 28
  33. 328
  34. 540
  35. 41000
  36. 12
  37. 2
  38. 1
  39. 31/24
  40. 126

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