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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 997 · 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.Find the LCM of 12 and 27.
  2. 2.What is 15% of 300?
  3. 3.The ratio of boys to girls in a class is 2 : 3. There are 14 boys. How many girls are there?
  4. 4.Three temple bells ring every 10, 24 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  5. 5.Two tanks hold 280 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.Which is closest to 299 + 502 + 503? (a) 1400 (b) 1200 (c) 1300 (d) 1500
  7. 7.5.7 × 2 =
  8. 8.The HCF of two numbers is 4 and their LCM is 120. One of the numbers is 24. What is the other number?
  9. 9.The HCF of two numbers is 7 and their LCM is 126. One of the numbers is 14. What is the other number?
  10. 10.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  11. 11.If 2 kg of rice costs ₹130, how many kg can you buy for ₹780?
  12. 12.Find the HCF of 24 and 9.
  13. 13.Find the LCM of 7 and 2.
  14. 14.9.37 + 5.6 =
  15. 15.How many factors does 91 have?
  16. 16.Two tanks hold 25 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.How many factors does 81 have?
  18. 18.Which of these numbers divides exactly by 4? (a) 7607 (b) 6148 (c) 4491 (d) 9691
  19. 19.A hostel has enough food for 10 students for 7 days. How many days will the same food last for 7 students?
  20. 20.Find the LCM of 18 and 30.
  21. 21.A car goes 160 km on 8 litres of petrol. How far can it go on 32 litres (in km)?
  22. 22.How many factors does 96 have?
  23. 23.Round 78.26 to one decimal place. =
  24. 24.69 − 36 ÷ 6 × 5 =
  25. 25.Round 5022 to the nearest hundred.
  26. 26.Round 15.21 to one decimal place. =
  27. 27.49 + 6 × 3 − 35 =
  28. 28.Which of these numbers divides exactly by 8? (a) 1234 (b) 8380 (c) 1058 (d) 9208
  29. 29.The ratio of boys to girls in a class is 9 : 5. There are 81 boys. How many girls are there?
  30. 30.If 8 kg of rice costs ₹184, how many kg can you buy for ₹253?
  31. 31.Write 9/10 as a percent.
  32. 32.2 : 10 = 12 : ?
  33. 33.60% of a number is 6. What is the number?
  34. 34.Two tanks hold 120 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.Which is closest to 1491 ÷ 51? (a) 300 (b) 15 (c) 30 (d) 60
  36. 36.If 11 pencil boxes cost ₹176, how much do 3 pencil boxes cost (in ₹)?
  37. 37.What is the smallest number you must add to 366 so that it divides exactly by 12?
  38. 38.Write 3/4 as a percent.
  39. 39.What is 50% of 94?
  40. 40.3.35 + 9.9 =

Answer key

  1. 108
  2. 45
  3. 21
  4. 120
  5. 40
  6. 1300
  7. 11.4
  8. 20
  9. 63
  10. 8
  11. 12
  12. 3
  13. 14
  14. 14.97
  15. 4
  16. 5
  17. 5
  18. 6148
  19. 10
  20. 90
  21. 640
  22. 12
  23. 78.3
  24. 39
  25. 5000
  26. 15.2
  27. 32
  28. 9208
  29. 45
  30. 11
  31. 90
  32. 60
  33. 10
  34. 15
  35. 30
  36. 48
  37. 6
  38. 75
  39. 47
  40. 13.25

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