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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 229 · 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.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  2. 2.5 × (14 − 1) + 4 ÷ 2 =
  3. 3.46 − 40 ÷ 8 × 9 =
  4. 4.Find the LCM of 5 and 2.
  5. 5.What is the smallest number you must take away from 686 so that it divides exactly by 9?
  6. 6.A hall floor is 420 cm long and 240 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  7. 7.Write 3/4 as a percent.
  8. 8.The ratio of boys to girls in a class is 6 : 1. There are 54 boys. How many girls are there?
  9. 9.What is 2/7 of 14 students?
  10. 10.What is 40% of 465?
  11. 11.2 : 11 = 8 : ?
  12. 12.What is 150% of 396?
  13. 13.Zoya scored 6 marks out of 40 in a test. What percentage did Zoya score?
  14. 14.15.3 ÷ 3 =
  15. 15.How many factors does 51 have?
  16. 16.18.9 ÷ 7 =
  17. 17.A car goes 85 km on 5 litres of petrol. How far can it go on 20 litres (in km)?
  18. 18.8.49 + 9.7 =
  19. 19.Divide ₹180 between Karan and Priya in the ratio 2 : 1. How much does Karan get (in ₹)?
  20. 20.A hall floor is 300 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  21. 21.Round 83609 to the nearest ten.
  22. 22.Three temple bells ring every 4, 6 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.What is the smallest number you must take away from 634 so that it divides exactly by 13?
  24. 24.Two tanks hold 150 litres and 270 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 LCM of 7, 6 and 8.
  26. 26.A car goes 18 km on 2 litres of petrol. How far can it go on 8 litres (in km)?
  27. 27.1/4 + 8/11 =
  28. 28.Kavya takes 30 seconds and Arjun takes 80 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?
  29. 29.Find the LCM of 13, 12 and 6.
  30. 30.Find the LCM of 14 and 16.
  31. 31.What is 10% of 480?
  32. 32.A car goes 28 km on 2 litres of petrol. How far can it go on 32 litres (in km)?
  33. 33.Round 75223 to the nearest ten.
  34. 34.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?
  35. 35.How many factors does 15 have?
  36. 36.How many factors does 31 have?
  37. 37.Divide ₹583 between Isha and Kabir in the ratio 5 : 6. How much does Kabir get (in ₹)?
  38. 38.Two tanks hold 120 litres and 270 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  39. 39.Find the LCM of 7 and 5.
  40. 40.2 : 3 = 16 : ?

Answer key

  1. 32
  2. 67
  3. 1
  4. 10
  5. 2
  6. 28
  7. 75
  8. 9
  9. 4
  10. 186
  11. 44
  12. 594
  13. 15
  14. 5.1
  15. 4
  16. 2.7
  17. 340
  18. 18.19
  19. 120
  20. 10
  21. 83610
  22. 60
  23. 10
  24. 30
  25. 168
  26. 72
  27. 43/44
  28. 240
  29. 156
  30. 112
  31. 48
  32. 448
  33. 75220
  34. 21
  35. 4
  36. 2
  37. 318
  38. 30
  39. 35
  40. 24

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