← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 798 · 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.Three temple bells ring every 5, 12 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Two tanks hold 50 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.Three temple bells ring every 20, 5 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.Find the LCM of 30 and 54.
  5. 5.Round 13.07 to one decimal place. =
  6. 6.What percent of 250 is 195?
  7. 7.If 8 kg of rice costs ₹504, how many kg can you buy for ₹945?
  8. 8.7.5 × 5 =
  9. 9.12% of a number is 33. What is the number?
  10. 10.Sneha scored 5 marks out of 50 in a test. What percentage did Sneha score?
  11. 11.Two tanks hold 150 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.The ratio of boys to girls in a class is 6 : 1. There are 60 boys. How many girls are there?
  13. 13.Find the LCM of 18 and 15.
  14. 14.50 ÷ 5 × 5 + 11 =
  15. 15.A hostel has enough food for 2 students for 18 days. How many days will the same food last for 6 students?
  16. 16.Two tanks hold 100 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.Saanvi takes 60 seconds and Vivaan takes 50 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?
  18. 18.What is 50% of 440?
  19. 19.What is the smallest number you must take away from 663 so that it divides exactly by 6?
  20. 20.How many factors does 77 have?
  21. 21.What is the smallest number you must take away from 768 so that it divides exactly by 7?
  22. 22.The ratio of boys to girls in a class is 3 : 4. There are 15 boys. How many girls are there?
  23. 23.A hall floor is 400 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.Find the LCM of 15, 9 and 10.
  25. 25.How many factors does 66 have?
  26. 26.What is the smallest number you must add to 687 so that it divides exactly by 6?
  27. 27.54 ÷ 6 × 7 + 23 =
  28. 28.Find the LCM of 16 and 10.
  29. 29.Which of these numbers divides exactly by 6? (a) 1820 (b) 4512 (c) 3009 (d) 6742
  30. 30.9.83 + 5.9 =
  31. 31.Find the HCF of 20 and 90.
  32. 32.A hostel has enough food for 7 students for 24 days. How many days will the same food last for 24 students?
  33. 33.Two tanks hold 200 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.If 7 bottles of juice cost ₹350, how much do 2 bottles of juice cost (in ₹)?
  35. 35.Meera scored 20 marks out of 25 in a test. What percentage did Meera score?
  36. 36.How many factors does 96 have?
  37. 37.7 painters can paint a school in 16 days. How many days would 8 painters take, working at the same speed?
  38. 38.Which is closest to 497 × 78? (Round each number first.) (a) 400000 (b) 80000 (c) 40000 (d) 4000
  39. 39.Write 39/50 as a percent.
  40. 40.7.9 × 3 =

Answer key

  1. 120
  2. 10
  3. 60
  4. 270
  5. 13.1
  6. 78
  7. 15
  8. 37.5
  9. 275
  10. 10
  11. 50
  12. 10
  13. 90
  14. 61
  15. 6
  16. 20
  17. 300
  18. 220
  19. 3
  20. 4
  21. 5
  22. 20
  23. 24
  24. 90
  25. 8
  26. 3
  27. 86
  28. 80
  29. 4512
  30. 15.73
  31. 10
  32. 7
  33. 40
  34. 100
  35. 80
  36. 12
  37. 14
  38. 40000
  39. 78
  40. 23.7

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude