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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 557 · 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.A hostel has enough food for 10 students for 10 days. How many days will the same food last for 2 students?
  2. 2.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  3. 3.What is 5/7 of ₹56?
  4. 4.11 : 2 = 33 : ?
  5. 5.5 × (10 − 8) + 66 ÷ 6 =
  6. 6.Write 1/2 as a percent.
  7. 7.(11 + 16) × 6 − 12 =
  8. 8.The HCF of two numbers is 7 and their LCM is 245. One of the numbers is 49. What is the other number?
  9. 9.Three temple bells ring every 6, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Which is closest to 3595 ÷ 39? (a) 90 (b) 180 (c) 45 (d) 900
  11. 11.The HCF of two numbers is 9 and their LCM is 360. One of the numbers is 72. What is the other number?
  12. 12.Which is closest to 905 ÷ 31? (a) 15 (b) 30 (c) 60 (d) 300
  13. 13.What is the smallest number you must add to 994 so that it divides exactly by 6?
  14. 14.The HCF of two numbers is 5 and their LCM is 315. One of the numbers is 35. What is the other number?
  15. 15.Find the LCM of 10, 12 and 2.
  16. 16.What is the smallest number you must take away from 230 so that it divides exactly by 4?
  17. 17.A hall floor is 140 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.Find the LCM of 2, 8 and 3.
  19. 19.If 12 pens cost ₹120, how much do 19 pens cost (in ₹)?
  20. 20.Find the HCF of 64 and 40.
  21. 21.A hall floor is 125 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.What percent of 20 is 4?
  23. 23.Find the HCF of 99 and 77.
  24. 24.Which is closest to 503 × 28? (Round each number first.) (a) 15000 (b) 30000 (c) 1500 (d) 150000
  25. 25.A car goes 192 km on 8 litres of petrol. How far can it go on 39 litres (in km)?
  26. 26.How many factors does 48 have?
  27. 27.2/3 of 6 + 4 × 3 =
  28. 28.36.8 ÷ 8 =
  29. 29.(3 + 7) × 6 − 29 =
  30. 30.A hostel has enough food for 6 students for 22 days. How many days will the same food last for 3 students?
  31. 31.1/4 of 32 + 5 × 4 =
  32. 32.Find the LCM of 14, 2 and 6.
  33. 33.If 6 kites cost ₹324, how much do 8 kites cost (in ₹)?
  34. 34.What is the smallest number you must add to 209 so that it divides exactly by 8?
  35. 35.Diya scored 18 marks out of 20 in a test. What percentage did Diya score?
  36. 36.What is 8/9 of 117 students?
  37. 37.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 12. What is the other number?
  38. 38.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  39. 39.Three temple bells ring every 30, 4 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.1/2 × 3/4 =

Answer key

  1. 50
  2. 96
  3. 40
  4. 6
  5. 21
  6. 50
  7. 150
  8. 35
  9. 24
  10. 90
  11. 45
  12. 30
  13. 2
  14. 45
  15. 60
  16. 2
  17. 42
  18. 24
  19. 190
  20. 8
  21. 15
  22. 20
  23. 11
  24. 15000
  25. 936
  26. 10
  27. 16
  28. 4.6
  29. 31
  30. 44
  31. 28
  32. 42
  33. 432
  34. 7
  35. 90
  36. 104
  37. 8
  38. 27
  39. 60
  40. 3/8

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