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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 30 · 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.Write 3/4 as a percent.
  2. 2.Three temple bells ring every 24, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.4/6 + 1/2 =
  4. 4.Round 68527 to the nearest ten.
  5. 5.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  6. 6.The ratio of boys to girls in a class is 5 : 3. There are 20 boys. How many girls are there?
  7. 7.28 ÷ 4 × 6 + 7 =
  8. 8.50% of a number is 79. What is the number?
  9. 9.Find the LCM of 3, 12 and 14.
  10. 10.12 : 9 = 72 : ?
  11. 11.How many factors does 65 have?
  12. 12.A car goes 90 km on 5 litres of petrol. How far can it go on 17 litres (in km)?
  13. 13.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 4, 3 or 12.
  14. 14.What is the smallest number you must add to 531 so that it divides exactly by 4?
  15. 15.Two tanks hold 80 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.A car goes 176 km on 11 litres of petrol. How far can it go on 17 litres (in km)?
  17. 17.Which of these numbers divides exactly by 3? (a) 5987 (b) 8914 (c) 2784 (d) 1267
  18. 18.Find the smallest number bigger than 10 that leaves a remainder of 4 when divided by 9, 10 or 5.
  19. 19.A hostel has enough food for 8 students for 14 days. How many days will the same food last for 14 students?
  20. 20.40 + 3 × 10 − 10 =
  21. 21.What is the smallest number you must add to 908 so that it divides exactly by 13?
  22. 22.8 ÷ 4 × 9 + 14 =
  23. 23.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  24. 24.Two tanks hold 20 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  26. 26.Divide ₹135 between Priya and Meera in the ratio 1 : 4. How much does Priya get (in ₹)?
  27. 27.Divide ₹121 between Kabir and Aarav in the ratio 9 : 2. How much does Kabir get (in ₹)?
  28. 28.6/7 − 5/6 =
  29. 29.Find the LCM of 9 and 5.
  30. 30.Find the LCM of 15, 4 and 2.
  31. 31.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?
  32. 32.Find the LCM of 15 and 12.
  33. 33.Arjun takes 50 seconds and Nisha 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?
  34. 34.If 9 kg of rice costs ₹279, how many kg can you buy for ₹434?
  35. 35.How many factors does 28 have?
  36. 36.How many factors does 35 have?
  37. 37.87 − 63 ÷ 9 × 8 =
  38. 38.A hostel has enough food for 9 students for 30 days. How many days will the same food last for 6 students?
  39. 39.11 : 13 = 22 : ?
  40. 40.If 4 kg of rice costs ₹236, how many kg can you buy for ₹177?

Answer key

  1. 75
  2. 120
  3. 7/6
  4. 68530
  5. 32
  6. 12
  7. 49
  8. 158
  9. 84
  10. 54
  11. 4
  12. 306
  13. 13
  14. 1
  15. 10
  16. 272
  17. 2784
  18. 94
  19. 8
  20. 60
  21. 2
  22. 32
  23. 8
  24. 10
  25. 225
  26. 27
  27. 99
  28. 1/42
  29. 45
  30. 60
  31. 5
  32. 60
  33. 450
  34. 14
  35. 6
  36. 4
  37. 31
  38. 45
  39. 26
  40. 3

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