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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 569 · 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.Round 20034 to the nearest thousand.
  2. 2.What percent of 400 is 80?
  3. 3.11 : 10 = 55 : ?
  4. 4.9/12 × 1/2 =
  5. 5.11 : 12 = 88 : ?
  6. 6.44 − 56 ÷ 8 × 2 =
  7. 7.Round 90.56 to one decimal place. =
  8. 8.If 2 kg of rice costs ₹50, how many kg can you buy for ₹200?
  9. 9.How many factors does 83 have?
  10. 10.Write 3/4 as a percent.
  11. 11.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 5, 15 or 4.
  12. 12.What is the smallest number you must add to 818 so that it divides exactly by 7?
  13. 13.What is the smallest number you must add to 437 so that it divides exactly by 3?
  14. 14.What is 15% of 540?
  15. 15.16 + 7 × 2 − 4 =
  16. 16.The ratio of boys to girls in a class is 1 : 5. There are 6 boys. How many girls are there?
  17. 17.Write 3/20 as a percent.
  18. 18.If 4 pencil boxes cost ₹160, how much do 13 pencil boxes cost (in ₹)?
  19. 19.How many factors does 33 have?
  20. 20.Aditya takes 54 seconds and Rahul takes 30 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?
  21. 21.Round 96291 to the nearest ten.
  22. 22.What is the smallest number you must add to 719 so that it divides exactly by 4?
  23. 23.15 + 2 × 11 − 4 =
  24. 24.What is the smallest number you must take away from 891 so that it divides exactly by 13?
  25. 25.33 − 16 ÷ 8 × 8 =
  26. 26.Find the HCF of 15 and 27.
  27. 27.6.1 × 3 =
  28. 28.12% of a number is 30. What is the number?
  29. 29.Three temple bells ring every 6, 9 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.The HCF of two numbers is 9 and their LCM is 180. One of the numbers is 45. What is the other number?
  31. 31.Divide ₹240 between Priya and Ananya in the ratio 1 : 7. How much does Ananya get (in ₹)?
  32. 32.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  33. 33.Find the HCF of 126 and 56.
  34. 34.40% of a number is 34. What is the number?
  35. 35.Find the LCM of 4, 9 and 2.
  36. 36.12 : 10 = 36 : ?
  37. 37.Manav takes 72 seconds and Aditya 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?
  38. 38.What is the smallest number you must add to 679 so that it divides exactly by 4?
  39. 39.8/11 − 1/2 =
  40. 40.What is the smallest number you must add to 245 so that it divides exactly by 9?

Answer key

  1. 20000
  2. 20
  3. 50
  4. 3/8
  5. 96
  6. 30
  7. 90.6
  8. 8
  9. 2
  10. 75
  11. 63
  12. 1
  13. 1
  14. 81
  15. 26
  16. 30
  17. 15
  18. 520
  19. 4
  20. 270
  21. 96290
  22. 1
  23. 33
  24. 7
  25. 17
  26. 3
  27. 18.3
  28. 250
  29. 90
  30. 36
  31. 210
  32. 16
  33. 14
  34. 85
  35. 36
  36. 30
  37. 360
  38. 1
  39. 5/22
  40. 7

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