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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 645 · 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.What percent of 400 is 4?
  2. 2.Round 53.27 to one decimal place. =
  3. 3.What is 15% of 100?
  4. 4.12 : 3 = 84 : ?
  5. 5.Write 1/4 as a percent.
  6. 6.The HCF of two numbers is 5 and their LCM is 200. One of the numbers is 25. What is the other number?
  7. 7.52 − 40 ÷ 8 × 6 =
  8. 8.7 : 13 = 14 : ?
  9. 9.Divide ₹84 between Vivaan and Zoya in the ratio 2 : 1. How much does Zoya get (in ₹)?
  10. 10.4/9 + 3/4 =
  11. 11.Which is closest to 201 + 398 + 701? (a) 1400 (b) 1200 (c) 1500 (d) 1300
  12. 12.Which is closest to 1498 ÷ 49? (a) 60 (b) 30 (c) 15 (d) 300
  13. 13.If 4 kg of rice costs ₹284, how many kg can you buy for ₹852?
  14. 14.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  15. 15.80% of a number is 180. What is the number?
  16. 16.The ratio of boys to girls in a class is 9 : 1. There are 63 boys. How many girls are there?
  17. 17.Write 1/10 as a percent.
  18. 18.Diya takes 50 seconds and Isha takes 40 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?
  19. 19.What is 12% of 575?
  20. 20.Find the LCM of 28 and 24.
  21. 21.4 painters can paint a school in 6 days. How many days would 12 painters take, working at the same speed?
  22. 22.A car goes 18 km on 2 litres of petrol. How far can it go on 7 litres (in km)?
  23. 23.6 : 9 = 42 : ?
  24. 24.2/6 + 1/8 =
  25. 25.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 8, 10 or 6.
  26. 26.Find the LCM of 5, 4 and 11.
  27. 27.21 ÷ 3 × 9 + 20 =
  28. 28.The HCF of two numbers is 2 and their LCM is 24. One of the numbers is 8. What is the other number?
  29. 29.What is 20% of 210?
  30. 30.A car goes 30 km on 3 litres of petrol. How far can it go on 19 litres (in km)?
  31. 31.Round 21093 to the nearest ten.
  32. 32.A car goes 144 km on 12 litres of petrol. How far can it go on 29 litres (in km)?
  33. 33.Three temple bells ring every 24, 18 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.What is the smallest number you must add to 218 so that it divides exactly by 8?
  35. 35.Which is closest to 405 + 195 + 301? (a) 1000 (b) 1100 (c) 800 (d) 900
  36. 36.Aditya takes 45 seconds and Sneha 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?
  37. 37.What is 25% of 376?
  38. 38.What is the smallest number you must add to 577 so that it divides exactly by 9?
  39. 39.Three temple bells ring every 18, 9 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.66 ÷ 6 × 8 + 12 =

Answer key

  1. 1
  2. 53.3
  3. 15
  4. 21
  5. 25
  6. 40
  7. 22
  8. 26
  9. 28
  10. 43/36
  11. 1300
  12. 30
  13. 12
  14. 150
  15. 225
  16. 7
  17. 10
  18. 200
  19. 69
  20. 168
  21. 2
  22. 63
  23. 63
  24. 11/24
  25. 122
  26. 220
  27. 83
  28. 6
  29. 42
  30. 190
  31. 21090
  32. 348
  33. 72
  34. 6
  35. 900
  36. 270
  37. 94
  38. 8
  39. 90
  40. 100

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