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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 570 · 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. 1.9.42 + 1.3 =
  2. 2.What is the smallest number you must take away from 149 so that it divides exactly by 3?
  3. 3.1/4 of 28 + 7 × 2 =
  4. 4.If 2 kg of rice costs ₹178, how many kg can you buy for ₹890?
  5. 5.Write 3/10 as a percent.
  6. 6.Divide ₹360 between Priya and Saanvi in the ratio 5 : 4. How much does Priya get (in ₹)?
  7. 7.2/7 + 1/2 =
  8. 8.2/4 + 4/6 =
  9. 9.10 : 5 = 80 : ?
  10. 10.Find the HCF of 10 and 12.
  11. 11.Two tanks hold 15 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.Divide ₹423 between Tara and Rahul in the ratio 7 : 2. How much does Tara get (in ₹)?
  13. 13.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  14. 14.If 7 kg of rice costs ₹259, how many kg can you buy for ₹74?
  15. 15.Vivaan takes 72 seconds and Pooja takes 45 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  16. 16.9 painters can paint a school in 15 days. How many days would 3 painters take, working at the same speed?
  17. 17.Two tanks hold 300 litres and 250 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.How many factors does 14 have?
  19. 19.What percent of 20 is 19?
  20. 20.7 × (14 − 9) + 10 ÷ 5 =
  21. 21.What is the smallest number you must take away from 553 so that it divides exactly by 9?
  22. 22.3.2 × 6 =
  23. 23.Two tanks hold 315 litres and 270 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.What is 8/9 of 81 km?
  25. 25.11 : 9 = 66 : ?
  26. 26.8 × (20 − 2) + 80 ÷ 8 =
  27. 27.20% of a number is 63. What is the number?
  28. 28.What percent of 80 is 36?
  29. 29.What is the smallest number you must take away from 679 so that it divides exactly by 12?
  30. 30.The HCF of two numbers is 6 and their LCM is 216. One of the numbers is 54. What is the other number?
  31. 31.45 − 18 ÷ 6 × 9 =
  32. 32.38 + 4 × 2 − 35 =
  33. 33.2.35 + 9.7 =
  34. 34.Find the HCF of 45 and 75.
  35. 35.How many factors does 13 have?
  36. 36.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 5, 3 or 15.
  37. 37.Find the LCM of 2, 15 and 8.
  38. 38.Divide ₹220 between Aditya and Rohan in the ratio 2 : 3. How much does Aditya get (in ₹)?
  39. 39.Find the LCM of 24 and 28.
  40. 40.Which of these numbers divides exactly by 11? (a) 2701 (b) 8965 (c) 6145 (d) 3896

Answer key

  1. 10.72
  2. 2
  3. 21
  4. 10
  5. 30
  6. 200
  7. 11/14
  8. 7/6
  9. 40
  10. 2
  11. 5
  12. 329
  13. 225
  14. 2
  15. 360
  16. 45
  17. 50
  18. 4
  19. 95
  20. 37
  21. 4
  22. 19.2
  23. 45
  24. 72
  25. 54
  26. 154
  27. 315
  28. 45
  29. 7
  30. 24
  31. 18
  32. 11
  33. 12.05
  34. 15
  35. 2
  36. 17
  37. 120
  38. 88
  39. 168
  40. 8965

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