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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 386 · 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.Write 17/20 as a percent.
  2. 2.If 6 kites cost ₹270, how much do 20 kites cost (in ₹)?
  3. 3.The ratio of boys to girls in a class is 5 : 3. There are 50 boys. How many girls are there?
  4. 4.How many factors does 60 have?
  5. 5.2 × (21 − 20) + 36 ÷ 3 =
  6. 6.If 2 erasers cost ₹16, how much do 9 erasers cost (in ₹)?
  7. 7.How many factors does 41 have?
  8. 8.3/6 × 5/10 =
  9. 9.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  10. 10.What is the smallest number you must add to 978 so that it divides exactly by 7?
  11. 11.The HCF of two numbers is 3 and their LCM is 60. One of the numbers is 12. What is the other number?
  12. 12.3.17 + 8.2 =
  13. 13.What percent of 80 is 60?
  14. 14.If 2 kg of rice costs ₹106, how many kg can you buy for ₹265?
  15. 15.1/9 × 1/2 =
  16. 16.Divide ₹216 between Aditya and Diya in the ratio 3 : 5. How much does Aditya get (in ₹)?
  17. 17.What is the smallest number you must take away from 930 so that it divides exactly by 13?
  18. 18.How many factors does 38 have?
  19. 19.1/2 of 22 + 5 × 8 =
  20. 20.A car goes 105 km on 5 litres of petrol. How far can it go on 30 litres (in km)?
  21. 21.Find the LCM of 4, 6 and 9.
  22. 22.Three temple bells ring every 9, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.3 : 2 = 15 : ?
  24. 24.Saanvi takes 54 seconds and Dev 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?
  25. 25.Find the smallest number bigger than 15 that leaves a remainder of 5 when divided by 15, 6 or 12.
  26. 26.5.5 × 5 =
  27. 27.7/8 − 4/12 =
  28. 28.Find the HCF of 84 and 36.
  29. 29.27.5 ÷ 5 =
  30. 30.Find the LCM of 45 and 10.
  31. 31.Three temple bells ring every 15, 20 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.If 3 erasers cost ₹12, how much do 7 erasers cost (in ₹)?
  33. 33.Round 42.26 to one decimal place. =
  34. 34.Which is closest to 305 + 102 + 504? (a) 1100 (b) 1000 (c) 800 (d) 900
  35. 35.Write 19/20 as a percent.
  36. 36.Write 1/4 as a percent.
  37. 37.Which of these numbers divides exactly by 9? (a) 5971 (b) 7458 (c) 1629 (d) 9541
  38. 38.What percent of 20 is 16?
  39. 39.What percent of 50 is 13?
  40. 40.Which is closest to 400 + 798 + 795? (a) 1900 (b) 2000 (c) 2200 (d) 2100

Answer key

  1. 85
  2. 900
  3. 30
  4. 12
  5. 14
  6. 72
  7. 2
  8. 1/4
  9. 72
  10. 2
  11. 15
  12. 11.37
  13. 75
  14. 5
  15. 1/18
  16. 81
  17. 7
  18. 4
  19. 51
  20. 630
  21. 36
  22. 36
  23. 10
  24. 540
  25. 65
  26. 27.5
  27. 13/24
  28. 12
  29. 5.5
  30. 90
  31. 120
  32. 28
  33. 42.3
  34. 900
  35. 95
  36. 25
  37. 1629
  38. 80
  39. 26
  40. 2000

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