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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 724 · 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 9 erasers cost ₹162, how much do 20 erasers cost (in ₹)?
  2. 2.Find the HCF of 70 and 60.
  3. 3.Which of these numbers divides exactly by 8? (a) 9177 (b) 7764 (c) 5808 (d) 8590
  4. 4.If 4 pens cost ₹12, how much do 13 pens cost (in ₹)?
  5. 5.5 painters can paint a school in 8 days. How many days would 2 painters take, working at the same speed?
  6. 6.If 7 erasers cost ₹343, how much do 2 erasers cost (in ₹)?
  7. 7.10/12 − 2/10 =
  8. 8.Two tanks hold 200 litres and 240 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.Find the HCF of 6 and 15.
  10. 10.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 8 or 5.
  11. 11.Find the LCM of 5, 15 and 4.
  12. 12.Find the LCM of 18 and 48.
  13. 13.Which of these numbers divides exactly by 3? (a) 1195 (b) 6028 (c) 3144 (d) 8851
  14. 14.What is the smallest number you must take away from 517 so that it divides exactly by 4?
  15. 15.Divide ₹250 between Farhan and Kabir in the ratio 2 : 3. How much does Kabir get (in ₹)?
  16. 16.The HCF of two numbers is 2 and their LCM is 70. One of the numbers is 10. What is the other number?
  17. 17.What percent of 25 is 4?
  18. 18.Divide ₹112 between Sneha and Pooja in the ratio 9 : 7. How much does Pooja get (in ₹)?
  19. 19.How many factors does 45 have?
  20. 20.A car goes 40 km on 5 litres of petrol. How far can it go on 25 litres (in km)?
  21. 21.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 12, 3 or 15.
  22. 22.Write 3/4 as a percent.
  23. 23.A car goes 72 km on 6 litres of petrol. How far can it go on 5 litres (in km)?
  24. 24.10 : 7 = 50 : ?
  25. 25.How many factors does 94 have?
  26. 26.Three temple bells ring every 15, 6 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.What is the smallest number you must take away from 443 so that it divides exactly by 12?
  28. 28.Find the third proportional to 7 and 35 (that is, 7 : 35 = 35 : ?).
  29. 29.(7 + 3) × 8 − 26 =
  30. 30.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 3, 5 or 15.
  31. 31.Round 64.73 to one decimal place. =
  32. 32.3 : 5 = 21 : ?
  33. 33.Which is closest to 695 + 195 + 699? (a) 1700 (b) 1500 (c) 1800 (d) 1600
  34. 34.What percent of 500 is 200?
  35. 35.What is the smallest number you must add to 260 so that it divides exactly by 6?
  36. 36.Find the LCM of 2 and 9.
  37. 37.6 : 4 = 48 : ?
  38. 38.Find the LCM of 5 and 6.
  39. 39.50 + 9 × 3 − 4 =
  40. 40.(4 + 13) × 2 − 7 =

Answer key

  1. 360
  2. 10
  3. 5808
  4. 39
  5. 20
  6. 98
  7. 19/30
  8. 40
  9. 3
  10. 41
  11. 60
  12. 144
  13. 3144
  14. 1
  15. 150
  16. 14
  17. 16
  18. 49
  19. 6
  20. 200
  21. 61
  22. 75
  23. 60
  24. 35
  25. 4
  26. 120
  27. 11
  28. 175
  29. 54
  30. 16
  31. 64.7
  32. 35
  33. 1600
  34. 40
  35. 4
  36. 18
  37. 32
  38. 30
  39. 73
  40. 27

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