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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 312 · 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 8, 7 and 12.
  2. 2.Which of these numbers divides exactly by 11? (a) 5324 (b) 5668 (c) 3909 (d) 6382
  3. 3.Find the LCM of 12, 14 and 8.
  4. 4.(4 + 10) × 3 − 2 =
  5. 5.Pooja takes 90 seconds and Diya takes 75 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?
  6. 6.What is 1/4 of ₹108?
  7. 7.A hall floor is 280 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.A car goes 60 km on 3 litres of petrol. How far can it go on 16 litres (in km)?
  9. 9.Write 1/4 as a percent.
  10. 10.7 : 6 = 63 : ?
  11. 11.What percent of 40 is 22?
  12. 12.What is 12% of 175?
  13. 13.Write 17/20 as a percent.
  14. 14.1/2 + 1/3 =
  15. 15.8.9 × 8 =
  16. 16.Three temple bells ring every 20, 6 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.Ishaan scored 1 marks out of 20 in a test. What percentage did Ishaan score?
  18. 18.A car goes 210 km on 10 litres of petrol. How far can it go on 8 litres (in km)?
  19. 19.Three temple bells ring every 12, 10 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  20. 20.Three temple bells ring every 4, 18 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.Three temple bells ring every 8, 12 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Find the smallest number bigger than 15 that leaves a remainder of 7 when divided by 12, 15 or 8.
  23. 23.Three temple bells ring every 24, 18 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.What is the smallest number you must add to 845 so that it divides exactly by 9?
  25. 25.A hostel has enough food for 11 students for 4 days. How many days will the same food last for 22 students?
  26. 26.Which is closest to 305 + 598 + 298? (a) 1100 (b) 1400 (c) 1300 (d) 1200
  27. 27.6 : 4 = 12 : ?
  28. 28.If 3 kg of rice costs ₹63, how many kg can you buy for ₹315?
  29. 29.3 : 8 = 24 : ?
  30. 30.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  31. 31.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  32. 32.Which of these numbers divides exactly by 3? (a) 3516 (b) 3068 (c) 2677 (d) 8602
  33. 33.80% of a number is 408. What is the number?
  34. 34.If 2 kg of rice costs ₹72, how many kg can you buy for ₹540?
  35. 35.2 : 11 = 14 : ?
  36. 36.Write 1/2 as a percent.
  37. 37.A hostel has enough food for 11 students for 12 days. How many days will the same food last for 6 students?
  38. 38.Dev takes 48 seconds and Rohan takes 72 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?
  39. 39.75 − 36 ÷ 4 × 7 =
  40. 40.If 5 kg of rice costs ₹425, how many kg can you buy for ₹1020?

Answer key

  1. 168
  2. 5324
  3. 168
  4. 40
  5. 450
  6. 27
  7. 14
  8. 320
  9. 25
  10. 54
  11. 55
  12. 21
  13. 85
  14. 5/6
  15. 71.2
  16. 60
  17. 5
  18. 168
  19. 120
  20. 72
  21. 120
  22. 127
  23. 72
  24. 1
  25. 2
  26. 1200
  27. 8
  28. 15
  29. 64
  30. 50
  31. 18
  32. 3516
  33. 510
  34. 15
  35. 77
  36. 50
  37. 22
  38. 144
  39. 12
  40. 12

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