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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 466 · 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 LCM of 12, 15 and 10.
  2. 2.Which is closest to 300 + 503 + 599? (a) 1400 (b) 1300 (c) 1500 (d) 1600
  3. 3.What is the smallest number you must add to 309 so that it divides exactly by 6?
  4. 4.Two tanks hold 120 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.7/11 + 4/7 =
  6. 6.Three temple bells ring every 12, 8 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.What is 50% of 94?
  8. 8.A hall floor is 240 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  9. 9.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  10. 10.Find the LCM of 8 and 5.
  11. 11.Find the LCM of 21 and 18.
  12. 12.Two tanks hold 35 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.The ratio of boys to girls in a class is 9 : 4. There are 81 boys. How many girls are there?
  14. 14.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  15. 15.8.7 × 2 =
  16. 16.A car goes 110 km on 11 litres of petrol. How far can it go on 16 litres (in km)?
  17. 17.5 : 13 = 10 : ?
  18. 18.Aarav takes 90 seconds and Karan takes 54 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?
  19. 19.What is the smallest number you must take away from 536 so that it divides exactly by 3?
  20. 20.2 : 9 = 14 : ?
  21. 21.25% of a number is 95. What is the number?
  22. 22.How many factors does 24 have?
  23. 23.(18 + 14) × 6 − 25 =
  24. 24.6/11 − 2/4 =
  25. 25.If 10 cricket balls cost ₹150, how much do 15 cricket balls cost (in ₹)?
  26. 26.The ratio of boys to girls in a class is 3 : 2. There are 27 boys. How many girls are there?
  27. 27.What percent of 400 is 180?
  28. 28.Divide ₹55 between Karan and Nisha in the ratio 1 : 4. How much does Karan get (in ₹)?
  29. 29.The ratio of boys to girls in a class is 4 : 1. There are 40 boys. How many girls are there?
  30. 30.A hostel has enough food for 11 students for 19 days. How many days will the same food last for 19 students?
  31. 31.Find the LCM of 4, 5 and 8.
  32. 32.1/2 of 14 + 2 × 5 =
  33. 33.Three temple bells ring every 12, 8 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.3/7 − 3/9 =
  35. 35.40% of a number is 212. What is the number?
  36. 36.15% of a number is 12. What is the number?
  37. 37.Which is closest to 794 ÷ 21? (a) 20 (b) 80 (c) 400 (d) 40
  38. 38.A car goes 161 km on 7 litres of petrol. How far can it go on 16 litres (in km)?
  39. 39.Which is closest to 2399 ÷ 41? (a) 120 (b) 600 (c) 30 (d) 60
  40. 40.1/2 + 11/12 =

Answer key

  1. 60
  2. 1400
  3. 3
  4. 30
  5. 93/77
  6. 120
  7. 47
  8. 12
  9. 20
  10. 40
  11. 126
  12. 5
  13. 36
  14. 64
  15. 17.4
  16. 160
  17. 26
  18. 270
  19. 2
  20. 63
  21. 380
  22. 8
  23. 167
  24. 1/22
  25. 225
  26. 18
  27. 45
  28. 11
  29. 10
  30. 11
  31. 40
  32. 17
  33. 120
  34. 2/21
  35. 530
  36. 80
  37. 40
  38. 368
  39. 60
  40. 17/12

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