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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 212 · 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.Ananya scored 2 marks out of 25 in a test. What percentage did Ananya score?
  2. 2.6.45 + 5.1 =
  3. 3.2/6 − 2/8 =
  4. 4.What percent of 200 is 150?
  5. 5.Find the HCF of 44 and 33.
  6. 6.3 : 6 = 24 : ?
  7. 7.7 painters can paint a school in 11 days. How many days would 11 painters take, working at the same speed?
  8. 8.The HCF of two numbers is 7 and their LCM is 294. One of the numbers is 42. What is the other number?
  9. 9.Find the LCM of 8, 7 and 4.
  10. 10.Find the LCM of 11, 3 and 4.
  11. 11.The ratio of boys to girls in a class is 5 : 9. There are 20 boys. How many girls are there?
  12. 12.A hall floor is 175 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.Find the LCM of 8 and 10.
  14. 14.The ratio of boys to girls in a class is 9 : 1. There are 63 boys. How many girls are there?
  15. 15.1.3 × 9 =
  16. 16.Which is closest to 202 + 799 + 199? (a) 1200 (b) 1300 (c) 1400 (d) 1100
  17. 17.What is the smallest number you must add to 580 so that it divides exactly by 3?
  18. 18.Write 4/5 as a percent.
  19. 19.10/11 − 1/3 =
  20. 20.Find the LCM of 4, 5 and 11.
  21. 21.A hall floor is 210 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.Find the HCF of 54 and 12.
  23. 23.26 − 32 ÷ 4 × 3 =
  24. 24.Find the LCM of 2 and 5.
  25. 25.Three temple bells ring every 12, 24 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.Two tanks hold 90 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.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?
  28. 28.Divide ₹585 between Zoya and Ishaan in the ratio 7 : 6. How much does Ishaan get (in ₹)?
  29. 29.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  30. 30.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 3, 6 or 15.
  31. 31.Find the HCF of 63 and 49.
  32. 32.1/3 + 6/9 =
  33. 33.Round 78.54 to one decimal place. =
  34. 34.A hall floor is 400 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  35. 35.Find the LCM of 36 and 32.
  36. 36.If 7 erasers cost ₹224, how much do 13 erasers cost (in ₹)?
  37. 37.What percent of 200 is 42?
  38. 38.Find the LCM of 12 and 14.
  39. 39.3 : 2 = 27 : ?
  40. 40.Which of these numbers divides exactly by 9? (a) 4472 (b) 1676 (c) 8639 (d) 1665

Answer key

  1. 8
  2. 11.55
  3. 1/12
  4. 75
  5. 11
  6. 48
  7. 7
  8. 49
  9. 56
  10. 132
  11. 36
  12. 35
  13. 40
  14. 7
  15. 11.7
  16. 1200
  17. 2
  18. 80
  19. 19/33
  20. 220
  21. 42
  22. 6
  23. 2
  24. 10
  25. 120
  26. 15
  27. 45
  28. 270
  29. 75
  30. 31
  31. 7
  32. 1
  33. 78.5
  34. 40
  35. 288
  36. 416
  37. 21
  38. 84
  39. 18
  40. 1665

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