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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 225 · 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.Two tanks hold 90 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.42 + 5 × 8 − 36 =
  3. 3.1/4 of 36 + 3 × 5 =
  4. 4.How many factors does 30 have?
  5. 5.Find the LCM of 20 and 8.
  6. 6.Find the HCF of 24 and 36.
  7. 7.Divide ₹264 between Tara and Dev in the ratio 5 : 7. How much does Dev get (in ₹)?
  8. 8.Divide ₹552 between Sneha and Tara in the ratio 7 : 5. How much does Tara get (in ₹)?
  9. 9.Which is closest to 198 + 800 + 103? (a) 1200 (b) 1100 (c) 1300 (d) 1000
  10. 10.Which is closest to 1498 ÷ 51? (a) 15 (b) 30 (c) 60 (d) 300
  11. 11.Find the LCM of 16 and 14.
  12. 12.150% of a number is 3. What is the number?
  13. 13.What is 1/4 of ₹40?
  14. 14.What is 6/7 of 77 km?
  15. 15.Find the LCM of 6 and 15.
  16. 16.Which is closest to 395 + 204 + 495? (a) 1300 (b) 1100 (c) 1200 (d) 1000
  17. 17.What is 1/9 of ₹243?
  18. 18.Divide ₹592 between Rahul and Aditya in the ratio 9 : 7. How much does Aditya get (in ₹)?
  19. 19.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  20. 20.38 − 18 ÷ 9 × 3 =
  21. 21.How many factors does 55 have?
  22. 22.What is the smallest number you must add to 374 so that it divides exactly by 12?
  23. 23.What is the smallest number you must add to 105 so that it divides exactly by 8?
  24. 24.2 painters can paint a school in 10 days. How many days would 5 painters take, working at the same speed?
  25. 25.A hall floor is 315 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  26. 26.(15 + 17) × 7 − 2 =
  27. 27.If 9 pens cost ₹351, how much do 20 pens cost (in ₹)?
  28. 28.9 : 4 = 45 : ?
  29. 29.Which is closest to 699 + 297 + 598? (a) 1800 (b) 1500 (c) 1600 (d) 1700
  30. 30.How many factors does 17 have?
  31. 31.Two tanks hold 100 litres and 250 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.The HCF of two numbers is 4 and their LCM is 160. One of the numbers is 32. What is the other number?
  33. 33.12 : 13 = 24 : ?
  34. 34.What is 4/5 of ₹80?
  35. 35.9/11 − 4/6 =
  36. 36.Find the LCM of 13, 2 and 9.
  37. 37.If 6 kg of rice costs ₹528, how many kg can you buy for ₹440?
  38. 38.What is 3/5 of 110 km?
  39. 39.2 : 11 = 16 : ?
  40. 40.9/12 + 7/10 =

Answer key

  1. 15
  2. 46
  3. 24
  4. 8
  5. 40
  6. 12
  7. 154
  8. 230
  9. 1100
  10. 30
  11. 112
  12. 2
  13. 10
  14. 66
  15. 30
  16. 1100
  17. 27
  18. 259
  19. 96
  20. 32
  21. 4
  22. 10
  23. 7
  24. 4
  25. 28
  26. 222
  27. 780
  28. 20
  29. 1600
  30. 2
  31. 50
  32. 20
  33. 26
  34. 64
  35. 5/33
  36. 234
  37. 5
  38. 66
  39. 88
  40. 29/20

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