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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 639 · 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.What is the smallest number you must take away from 152 so that it divides exactly by 12?
  2. 2.Find the HCF of 10 and 4.
  3. 3.Write 9/10 as a percent.
  4. 4.Divide ₹308 between Karan and Rahul in the ratio 9 : 2. How much does Karan get (in ₹)?
  5. 5.Three temple bells ring every 9, 5 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.A hostel has enough food for 6 students for 9 days. How many days will the same food last for 3 students?
  7. 7.7 : 2 = 28 : ?
  8. 8.2 : 15 = 6 : ?
  9. 9.150% of a number is 30. What is the number?
  10. 10.What is the smallest number you must add to 160 so that it divides exactly by 3?
  11. 11.What percent of 40 is 2?
  12. 12.What is the smallest number you must take away from 776 so that it divides exactly by 6?
  13. 13.4/9 × 5/11 =
  14. 14.What is the smallest number you must add to 245 so that it divides exactly by 3?
  15. 15.A hall floor is 350 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  16. 16.6.1 × 2 =
  17. 17.The ratio of boys to girls in a class is 7 : 8. There are 14 boys. How many girls are there?
  18. 18.Divide ₹391 between Tara and Aditya in the ratio 8 : 9. How much does Aditya get (in ₹)?
  19. 19.Divide ₹320 between Vivaan and Manav in the ratio 1 : 7. How much does Vivaan get (in ₹)?
  20. 20.A car goes 54 km on 3 litres of petrol. How far can it go on 16 litres (in km)?
  21. 21.2 : 5 = 10 : ?
  22. 22.If 6 kg of rice costs ₹378, how many kg can you buy for ₹819?
  23. 23.Two tanks hold 80 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.If 2 cricket balls cost ₹38, how much do 14 cricket balls cost (in ₹)?
  25. 25.A car goes 108 km on 12 litres of petrol. How far can it go on 17 litres (in km)?
  26. 26.Round 47845 to the nearest thousand.
  27. 27.What is the smallest number you must add to 236 so that it divides exactly by 3?
  28. 28.What is 15% of 240?
  29. 29.Find the HCF of 16 and 10.
  30. 30.1/2 × 3/5 =
  31. 31.Two tanks hold 360 litres and 405 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 9, 10 or 3.
  33. 33.Find the smallest number bigger than 12 that leaves a remainder of 8 when divided by 9, 10 or 12.
  34. 34.Divide ₹243 between Sneha and Farhan in the ratio 8 : 1. How much does Sneha get (in ₹)?
  35. 35.How many factors does 20 have?
  36. 36.Write 3/5 as a percent.
  37. 37.Which is closest to 2807 ÷ 41? (a) 35 (b) 140 (c) 70 (d) 700
  38. 38.Round 75396 to the nearest hundred.
  39. 39.If 5 notebooks cost ₹175, how much do 3 notebooks cost (in ₹)?
  40. 40.2/3 + 3/4 =

Answer key

  1. 8
  2. 2
  3. 90
  4. 252
  5. 90
  6. 18
  7. 8
  8. 45
  9. 20
  10. 2
  11. 5
  12. 2
  13. 20/99
  14. 1
  15. 21
  16. 12.2
  17. 16
  18. 207
  19. 40
  20. 288
  21. 25
  22. 13
  23. 40
  24. 266
  25. 153
  26. 48000
  27. 1
  28. 36
  29. 2
  30. 3/10
  31. 45
  32. 91
  33. 188
  34. 216
  35. 6
  36. 60
  37. 70
  38. 75400
  39. 105
  40. 17/12

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