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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 999 · 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.The ratio of boys to girls in a class is 9 : 8. There are 18 boys. How many girls are there?
  2. 2.If 2 mangoes cost ₹108, how much do 3 mangoes cost (in ₹)?
  3. 3.Find the HCF of 4 and 14.
  4. 4.How many factors does 61 have?
  5. 5.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  6. 6.1/2 × 5/8 =
  7. 7.If 4 kites cost ₹224, how much do 7 kites cost (in ₹)?
  8. 8.A hall floor is 250 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  9. 9.A hall floor is 125 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.5/6 of 18 + 4 × 3 =
  11. 11.Find the smallest number bigger than 6 that leaves a remainder of 3 when divided by 4, 5 or 6.
  12. 12.1/6 of 12 + 5 × 5 =
  13. 13.Find the LCM of 3, 5 and 12.
  14. 14.Find the HCF of 10 and 6.
  15. 15.1/8 of 16 + 7 × 8 =
  16. 16.10 : 4 = 70 : ?
  17. 17.Divide ₹144 between Meera and Kavya in the ratio 1 : 3. How much does Meera get (in ₹)?
  18. 18.8.84 + 6.2 =
  19. 19.36 ÷ 9 × 4 + 1 =
  20. 20.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  21. 21.Round 35761 to the nearest ten.
  22. 22.Divide ₹306 between Nisha and Ishaan in the ratio 7 : 2. How much does Ishaan get (in ₹)?
  23. 23.36 ÷ 9 × 4 + 6 =
  24. 24.Three temple bells ring every 20, 30 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.Write 1/2 as a percent.
  26. 26.6/12 − 2/5 =
  27. 27.Round 59.32 to one decimal place. =
  28. 28.How many factors does 46 have?
  29. 29.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  30. 30.A hostel has enough food for 5 students for 14 days. How many days will the same food last for 10 students?
  31. 31.Write 9/10 as a percent.
  32. 32.Arjun scored 1 marks out of 25 in a test. What percentage did Arjun score?
  33. 33.Divide ₹429 between Isha and Farhan in the ratio 6 : 7. How much does Isha get (in ₹)?
  34. 34.How many factors does 35 have?
  35. 35.What is the smallest number you must add to 570 so that it divides exactly by 4?
  36. 36.What is the smallest number you must add to 503 so that it divides exactly by 13?
  37. 37.Which is closest to 300 × 81? (Round each number first.) (a) 24000 (b) 48000 (c) 240000 (d) 2400
  38. 38.The HCF of two numbers is 3 and their LCM is 42. One of the numbers is 6. What is the other number?
  39. 39.Find the LCM of 10, 9 and 2.
  40. 40.Three temple bells ring every 5, 6 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 16
  2. 162
  3. 2
  4. 2
  5. 225
  6. 5/16
  7. 392
  8. 15
  9. 20
  10. 27
  11. 63
  12. 27
  13. 60
  14. 2
  15. 58
  16. 28
  17. 36
  18. 15.04
  19. 17
  20. 32
  21. 35760
  22. 68
  23. 22
  24. 60
  25. 50
  26. 1/10
  27. 59.3
  28. 4
  29. 8
  30. 7
  31. 90
  32. 4
  33. 198
  34. 4
  35. 2
  36. 4
  37. 24000
  38. 21
  39. 90
  40. 60

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