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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 790 · 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.Two tanks hold 160 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.Write 24/25 as a percent.
  3. 3.75 − 48 ÷ 8 × 9 =
  4. 4.3/4 + 1/5 =
  5. 5.How many factors does 27 have?
  6. 6.Find the HCF of 25 and 35.
  7. 7.What percent of 200 is 6?
  8. 8.The HCF of two numbers is 7 and their LCM is 168. One of the numbers is 56. What is the other number?
  9. 9.If 12 kites cost ₹636, how much do 7 kites cost (in ₹)?
  10. 10.Divide ₹448 between Rohan and Aarav in the ratio 5 : 3. How much does Aarav get (in ₹)?
  11. 11.(16 + 16) × 2 − 10 =
  12. 12.The ratio of boys to girls in a class is 9 : 1. There are 36 boys. How many girls are there?
  13. 13.Round 82.84 to one decimal place. =
  14. 14.Meera scored 12 marks out of 80 in a test. What percentage did Meera score?
  15. 15.What is the smallest number you must add to 740 so that it divides exactly by 3?
  16. 16.Find the HCF of 12 and 42.
  17. 17.8 : 9 = 56 : ?
  18. 18.What percent of 25 is 22?
  19. 19.Two tanks hold 350 litres and 250 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.Find the LCM of 10 and 15.
  21. 21.7/9 of 108 + 6 × 4 =
  22. 22.9/12 − 5/7 =
  23. 23.What is the smallest number you must add to 657 so that it divides exactly by 6?
  24. 24.Two tanks hold 90 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.15% of a number is 51. What is the number?
  26. 26.Three temple bells ring every 5, 12 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.Write 1/2 as a percent.
  28. 28.A car goes 120 km on 8 litres of petrol. How far can it go on 6 litres (in km)?
  29. 29.The HCF of two numbers is 2 and their LCM is 42. One of the numbers is 6. What is the other number?
  30. 30.5/12 × 1/9 =
  31. 31.Divide ₹531 between Priya and Rahul in the ratio 7 : 2. How much does Priya get (in ₹)?
  32. 32.Round 95.53 to one decimal place. =
  33. 33.Find the HCF of 16 and 12.
  34. 34.Which is closest to 804 + 101 + 202? (a) 1300 (b) 1100 (c) 1200 (d) 1000
  35. 35.Find the LCM of 45 and 40.
  36. 36.9 painters can paint a school in 13 days. How many days would 3 painters take, working at the same speed?
  37. 37.What percent of 40 is 20?
  38. 38.The ratio of boys to girls in a class is 3 : 7. There are 6 boys. How many girls are there?
  39. 39.40 ÷ 4 × 3 + 21 =
  40. 40.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).

Answer key

  1. 40
  2. 96
  3. 21
  4. 19/20
  5. 4
  6. 5
  7. 3
  8. 21
  9. 371
  10. 168
  11. 54
  12. 4
  13. 82.8
  14. 15
  15. 1
  16. 6
  17. 63
  18. 88
  19. 50
  20. 30
  21. 108
  22. 1/28
  23. 3
  24. 45
  25. 340
  26. 60
  27. 50
  28. 90
  29. 14
  30. 5/108
  31. 413
  32. 95.5
  33. 4
  34. 1100
  35. 360
  36. 39
  37. 50
  38. 14
  39. 51
  40. 16

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