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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 221 · 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.If 3 pencil boxes cost ₹159, how much do 5 pencil boxes cost (in ₹)?
  2. 2.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  3. 3.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 4, 6 or 5.
  4. 4.Divide ₹91 between Pooja and Aditya in the ratio 1 : 6. How much does Aditya get (in ₹)?
  5. 5.A hall floor is 400 cm long and 350 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  6. 6.Find the LCM of 25 and 20.
  7. 7.4/5 of 45 + 2 × 5 =
  8. 8.How many factors does 56 have?
  9. 9.2/9 − 1/12 =
  10. 10.(9 + 5) × 7 − 20 =
  11. 11.9.96 + 1.4 =
  12. 12.Divide ₹952 between Sneha and Ishaan in the ratio 9 : 8. How much does Ishaan get (in ₹)?
  13. 13.45 + 5 × 7 − 38 =
  14. 14.If 3 notebooks cost ₹33, how much do 10 notebooks cost (in ₹)?
  15. 15.Write 3/4 as a percent.
  16. 16.What percent of 50 is 31?
  17. 17.Find the HCF of 16 and 28.
  18. 18.Divide ₹357 between Tara and Kabir in the ratio 4 : 3. How much does Tara get (in ₹)?
  19. 19.What is the smallest number you must take away from 405 so that it divides exactly by 11?
  20. 20.5.9 × 8 =
  21. 21.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  22. 22.Nisha takes 90 seconds and Kabir takes 72 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?
  23. 23.Find the LCM of 4, 3 and 10.
  24. 24.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 12, 15 or 6.
  25. 25.103 − 36 ÷ 4 × 9 =
  26. 26.The HCF of two numbers is 4 and their LCM is 120. One of the numbers is 24. What is the other number?
  27. 27.31 + 3 × 7 − 6 =
  28. 28.A hostel has enough food for 5 students for 6 days. How many days will the same food last for 3 students?
  29. 29.A hall floor is 280 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Three temple bells ring every 4, 8 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.Find the HCF of 40 and 30.
  32. 32.Find the LCM of 10, 15 and 3.
  33. 33.4 × (17 − 8) + 10 ÷ 2 =
  34. 34.If 2 kg of rice costs ₹48, how many kg can you buy for ₹144?
  35. 35.Find the LCM of 35 and 25.
  36. 36.2 : 3 = 16 : ?
  37. 37.Saanvi takes 72 seconds and Tara 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?
  38. 38.1/2 × 5/6 =
  39. 39.(15 + 14) × 6 − 12 =
  40. 40.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 3, 9 or 8.

Answer key

  1. 265
  2. 54
  3. 61
  4. 78
  5. 56
  6. 100
  7. 46
  8. 8
  9. 5/36
  10. 78
  11. 11.36
  12. 448
  13. 42
  14. 110
  15. 75
  16. 62
  17. 4
  18. 204
  19. 9
  20. 47.2
  21. 80
  22. 360
  23. 60
  24. 63
  25. 22
  26. 20
  27. 46
  28. 10
  29. 14
  30. 40
  31. 10
  32. 30
  33. 41
  34. 6
  35. 175
  36. 24
  37. 360
  38. 5/12
  39. 162
  40. 74

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