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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 182 · 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.Find the HCF of 16 and 72.
  2. 2.150% of a number is 54. What is the number?
  3. 3.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  4. 4.55 − 4 ÷ 2 × 9 =
  5. 5.1/9 of 18 + 7 × 4 =
  6. 6.7/12 + 4/7 =
  7. 7.(5 + 5) × 3 − 2 =
  8. 8.4/5 × 1/2 =
  9. 9.What percent of 250 is 60?
  10. 10.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 8, 15 or 6.
  11. 11.Two tanks hold 180 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.A car goes 100 km on 5 litres of petrol. How far can it go on 21 litres (in km)?
  13. 13.How many factors does 12 have?
  14. 14.Write 3/50 as a percent.
  15. 15.Write 13/50 as a percent.
  16. 16.Three temple bells ring every 4, 10 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.3/8 of 72 + 3 × 6 =
  18. 18.A hostel has enough food for 2 students for 20 days. How many days will the same food last for 4 students?
  19. 19.A car goes 85 km on 5 litres of petrol. How far can it go on 28 litres (in km)?
  20. 20.A car goes 135 km on 9 litres of petrol. How far can it go on 17 litres (in km)?
  21. 21.Three temple bells ring every 5, 20 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Write 1/20 as a percent.
  23. 23.What is the smallest number you must take away from 201 so that it divides exactly by 13?
  24. 24.Round 81.76 to one decimal place. =
  25. 25.If 3 bottles of juice cost ₹153, how much do 13 bottles of juice cost (in ₹)?
  26. 26.What is the smallest number you must take away from 794 so that it divides exactly by 9?
  27. 27.The ratio of boys to girls in a class is 9 : 2. There are 81 boys. How many girls are there?
  28. 28.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 9. What is the other number?
  29. 29.Write 1/4 as a percent.
  30. 30.Find the HCF of 15 and 21.
  31. 31.Find the LCM of 24 and 18.
  32. 32.Which is closest to 198 + 498 + 205? (a) 1100 (b) 800 (c) 900 (d) 1000
  33. 33.Which is closest to 597 × 30? (Round each number first.) (a) 18000 (b) 180000 (c) 1800 (d) 36000
  34. 34.Find the LCM of 12, 15 and 8.
  35. 35.6 × (23 − 5) + 9 ÷ 3 =
  36. 36.6.8 × 4 =
  37. 37.The ratio of boys to girls in a class is 3 : 2. There are 18 boys. How many girls are there?
  38. 38.Round 24.29 to one decimal place. =
  39. 39.5 : 2 = 25 : ?
  40. 40.Nisha takes 72 seconds and Meera takes 54 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?

Answer key

  1. 8
  2. 36
  3. 128
  4. 37
  5. 30
  6. 97/84
  7. 28
  8. 2/5
  9. 24
  10. 121
  11. 20
  12. 420
  13. 6
  14. 6
  15. 26
  16. 40
  17. 45
  18. 10
  19. 476
  20. 255
  21. 60
  22. 5
  23. 6
  24. 81.8
  25. 663
  26. 2
  27. 18
  28. 6
  29. 25
  30. 3
  31. 72
  32. 900
  33. 18000
  34. 120
  35. 111
  36. 27.2
  37. 12
  38. 24.3
  39. 10
  40. 216

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