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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 533 · 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 percent of 500 is 295?
  2. 2.9 painters can paint a school in 21 days. How many days would 7 painters take, working at the same speed?
  3. 3.Write 3/4 as a percent.
  4. 4.Two tanks hold 320 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.80% of a number is 300. What is the number?
  6. 6.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  7. 7.Find the LCM of 42 and 54.
  8. 8.Find the LCM of 14, 5 and 10.
  9. 9.Which of these numbers divides exactly by 6? (a) 2086 (b) 6951 (c) 3907 (d) 2784
  10. 10.Find the LCM of 6, 11 and 9.
  11. 11.What is the smallest number you must take away from 495 so that it divides exactly by 13?
  12. 12.What is the smallest number you must take away from 582 so that it divides exactly by 9?
  13. 13.Which is closest to 803 ÷ 41? (a) 200 (b) 10 (c) 40 (d) 20
  14. 14.Which of these numbers divides exactly by 9? (a) 7811 (b) 3369 (c) 1368 (d) 6756
  15. 15.47 + 11 × 3 − 34 =
  16. 16.What is the smallest number you must add to 120 so that it divides exactly by 13?
  17. 17.A car goes 28 km on 2 litres of petrol. How far can it go on 22 litres (in km)?
  18. 18.4 : 9 = 16 : ?
  19. 19.24 − 24 ÷ 4 × 2 =
  20. 20.Rohan scored 30 marks out of 40 in a test. What percentage did Rohan score?
  21. 21.How many factors does 19 have?
  22. 22.Find the HCF of 12 and 32.
  23. 23.If 8 kg of rice costs ₹304, how many kg can you buy for ₹456?
  24. 24.Three temple bells ring every 6, 12 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.Three temple bells ring every 12, 10 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.Two tanks hold 180 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.What is 60% of 330?
  28. 28.2 × (17 − 16) + 18 ÷ 2 =
  29. 29.Three temple bells ring every 10, 15 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.A car goes 54 km on 6 litres of petrol. How far can it go on 18 litres (in km)?
  31. 31.What is the smallest number you must take away from 893 so that it divides exactly by 12?
  32. 32.Divide ₹252 between Farhan and Aarav in the ratio 4 : 5. How much does Farhan get (in ₹)?
  33. 33.A car goes 90 km on 6 litres of petrol. How far can it go on 15 litres (in km)?
  34. 34.What is 5/7 of ₹14?
  35. 35.What percent of 20 is 8?
  36. 36.A hostel has enough food for 4 students for 17 days. How many days will the same food last for 17 students?
  37. 37.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  38. 38.Round 76431 to the nearest ten.
  39. 39.If 7 pencil boxes cost ₹280, how much do 3 pencil boxes cost (in ₹)?
  40. 40.What is the smallest number you must add to 880 so that it divides exactly by 6?

Answer key

  1. 59
  2. 27
  3. 75
  4. 40
  5. 375
  6. 64
  7. 378
  8. 70
  9. 2784
  10. 198
  11. 1
  12. 6
  13. 20
  14. 1368
  15. 46
  16. 10
  17. 308
  18. 36
  19. 12
  20. 75
  21. 2
  22. 4
  23. 12
  24. 60
  25. 120
  26. 30
  27. 198
  28. 11
  29. 90
  30. 162
  31. 5
  32. 112
  33. 225
  34. 10
  35. 40
  36. 4
  37. 150
  38. 76430
  39. 120
  40. 2

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