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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 277 · 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.Which of these numbers divides exactly by 9? (a) 2340 (b) 5422 (c) 7968 (d) 8222
  2. 2.How many factors does 99 have?
  3. 3.A car goes 140 km on 10 litres of petrol. How far can it go on 18 litres (in km)?
  4. 4.What is 60% of 50?
  5. 5.Two tanks hold 50 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.Round 68.49 to one decimal place. =
  7. 7.Round 58013 to the nearest thousand.
  8. 8.Find the LCM of 12 and 15.
  9. 9.12 : 3 = 24 : ?
  10. 10.The ratio of boys to girls in a class is 1 : 2. There are 9 boys. How many girls are there?
  11. 11.Find the HCF of 99 and 22.
  12. 12.2/11 × 6/8 =
  13. 13.Two tanks hold 125 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  14. 14.Find the LCM of 8 and 3.
  15. 15.The HCF of two numbers is 9 and their LCM is 126. One of the numbers is 63. What is the other number?
  16. 16.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 4, 6 or 15.
  17. 17.Write 13/25 as a percent.
  18. 18.How many factors does 53 have?
  19. 19.What is the smallest number you must take away from 102 so that it divides exactly by 12?
  20. 20.How many factors does 64 have?
  21. 21.Find the HCF of 72 and 81.
  22. 22.The ratio of boys to girls in a class is 1 : 6. There are 6 boys. How many girls are there?
  23. 23.Ananya takes 54 seconds and Ishaan takes 90 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?
  24. 24.What is 25% of 24?
  25. 25.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 8, 12 or 3.
  26. 26.Find the HCF of 16 and 72.
  27. 27.120% of a number is 150. What is the number?
  28. 28.What is the smallest number you must add to 178 so that it divides exactly by 6?
  29. 29.Find the LCM of 12, 3 and 7.
  30. 30.What is the smallest number you must add to 299 so that it divides exactly by 12?
  31. 31.Divide ₹99 between Ananya and Diya in the ratio 6 : 5. How much does Ananya get (in ₹)?
  32. 32.9/12 − 1/5 =
  33. 33.Which of these numbers divides exactly by 9? (a) 7457 (b) 4606 (c) 8839 (d) 2313
  34. 34.What is the smallest number you must add to 574 so that it divides exactly by 6?
  35. 35.Arjun takes 50 seconds and Isha 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?
  36. 36.7/10 × 2/11 =
  37. 37.(9 + 6) × 6 − 22 =
  38. 38.Arjun takes 45 seconds and Sneha takes 80 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?
  39. 39.Find the LCM of 20 and 25.
  40. 40.The ratio of boys to girls in a class is 7 : 8. There are 70 boys. How many girls are there?

Answer key

  1. 2340
  2. 6
  3. 252
  4. 30
  5. 10
  6. 68.5
  7. 58000
  8. 60
  9. 6
  10. 18
  11. 11
  12. 3/22
  13. 25
  14. 24
  15. 18
  16. 61
  17. 52
  18. 2
  19. 6
  20. 7
  21. 9
  22. 36
  23. 270
  24. 6
  25. 25
  26. 8
  27. 125
  28. 2
  29. 84
  30. 1
  31. 54
  32. 11/20
  33. 2313
  34. 2
  35. 150
  36. 7/55
  37. 68
  38. 720
  39. 100
  40. 80

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