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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 815 · 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. 1.2 : 10 = 14 : ?
  2. 2.If 10 bottles of juice cost ₹100, how much do 19 bottles of juice cost (in ₹)?
  3. 3.Which is closest to 994 ÷ 21? (a) 50 (b) 100 (c) 25 (d) 500
  4. 4.If 4 cricket balls cost ₹120, how much do 19 cricket balls cost (in ₹)?
  5. 5.5/11 + 2/7 =
  6. 6.Which of these numbers divides exactly by 8? (a) 2619 (b) 3073 (c) 8102 (d) 6136
  7. 7.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  8. 8.A car goes 42 km on 2 litres of petrol. How far can it go on 4 litres (in km)?
  9. 9.A hostel has enough food for 9 students for 4 days. How many days will the same food last for 12 students?
  10. 10.If 5 cricket balls cost ₹240, how much do 3 cricket balls cost (in ₹)?
  11. 11.How many factors does 13 have?
  12. 12.Rohan scored 40 marks out of 80 in a test. What percentage did Rohan score?
  13. 13.Find the HCF of 54 and 30.
  14. 14.If 3 notebooks cost ₹162, how much do 11 notebooks cost (in ₹)?
  15. 15.Three temple bells ring every 6, 10 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.2/5 × 1/7 =
  17. 17.10 : 3 = 60 : ?
  18. 18.3/10 × 2/3 =
  19. 19.Round 47.92 to one decimal place. =
  20. 20.Two tanks hold 75 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.32.9 ÷ 7 =
  22. 22.What is the smallest number you must add to 994 so that it divides exactly by 9?
  23. 23.Find the LCM of 2, 12 and 6.
  24. 24.What is the smallest number you must add to 311 so that it divides exactly by 7?
  25. 25.How many factors does 85 have?
  26. 26.Three temple bells ring every 15, 24 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.Find the LCM of 28 and 12.
  28. 28.How many factors does 87 have?
  29. 29.What is the smallest number you must take away from 150 so that it divides exactly by 12?
  30. 30.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 3, 8 or 10.
  31. 31.1/4 of 48 + 2 × 7 =
  32. 32.4/6 − 1/2 =
  33. 33.Two tanks hold 135 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.60% of a number is 330. What is the number?
  35. 35.60% of a number is 183. What is the number?
  36. 36.Two tanks hold 250 litres and 300 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 10 or 5.
  38. 38.What percent of 40 is 20?
  39. 39.Find the HCF of 12 and 20.
  40. 40.Round 19.53 to one decimal place. =

Answer key

  1. 70
  2. 190
  3. 50
  4. 570
  5. 57/77
  6. 6136
  7. 32
  8. 84
  9. 3
  10. 144
  11. 2
  12. 50
  13. 6
  14. 594
  15. 60
  16. 2/35
  17. 18
  18. 1/5
  19. 47.9
  20. 15
  21. 4.7
  22. 5
  23. 12
  24. 4
  25. 4
  26. 120
  27. 84
  28. 4
  29. 6
  30. 121
  31. 26
  32. 1/6
  33. 15
  34. 550
  35. 305
  36. 50
  37. 32
  38. 50
  39. 4
  40. 19.5

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