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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 37 · 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.Two tanks hold 90 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.A car goes 100 km on 5 litres of petrol. How far can it go on 13 litres (in km)?
  3. 3.Find the HCF of 27 and 18.
  4. 4.Kavya takes 90 seconds and Ananya 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?
  5. 5.Find the LCM of 8, 5 and 12.
  6. 6.12 ÷ 8 =
  7. 7.A hall floor is 225 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.69 − 10 ÷ 2 × 6 =
  9. 9.1/3 + 3/9 =
  10. 10.Sneha takes 72 seconds and Vivaan 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?
  11. 11.Farhan takes 30 seconds and Dev 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?
  12. 12.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 56. What is the other number?
  13. 13.What is the smallest number you must add to 776 so that it divides exactly by 12?
  14. 14.What is the smallest number you must take away from 794 so that it divides exactly by 6?
  15. 15.Three temple bells ring every 6, 5 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.6/7 of 21 + 6 × 2 =
  17. 17.9.35 + 6.9 =
  18. 18.8.1 × 3 =
  19. 19.What is 150% of 346?
  20. 20.Round 21263 to the nearest ten.
  21. 21.A car goes 152 km on 8 litres of petrol. How far can it go on 37 litres (in km)?
  22. 22.Two tanks hold 10 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.The HCF of two numbers is 3 and their LCM is 72. One of the numbers is 24. What is the other number?
  24. 24.5.5 × 9 =
  25. 25.Find the LCM of 35 and 45.
  26. 26.5 painters can paint a school in 30 days. How many days would 10 painters take, working at the same speed?
  27. 27.Write 21/50 as a percent.
  28. 28.Manav takes 45 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?
  29. 29.Isha scored 24 marks out of 25 in a test. What percentage did Isha score?
  30. 30.How many factors does 50 have?
  31. 31.8 × (14 − 13) + 60 ÷ 5 =
  32. 32.If 4 kg of rice costs ₹220, how many kg can you buy for ₹605?
  33. 33.What percent of 400 is 336?
  34. 34.70 ÷ 7 × 6 + 28 =
  35. 35.7 : 8 = 49 : ?
  36. 36.If 10 kites cost ₹230, how much do 7 kites cost (in ₹)?
  37. 37.The HCF of two numbers is 2 and their LCM is 48. One of the numbers is 6. What is the other number?
  38. 38.2 : 7 = 6 : ?
  39. 39.Which is closest to 96 + 498 + 500? (a) 1000 (b) 1200 (c) 1300 (d) 1100
  40. 40.What is 15% of 220?

Answer key

  1. 30
  2. 260
  3. 9
  4. 450
  5. 120
  6. 1.5
  7. 10
  8. 39
  9. 2/3
  10. 360
  11. 150
  12. 16
  13. 4
  14. 2
  15. 90
  16. 30
  17. 16.25
  18. 24.3
  19. 519
  20. 21260
  21. 703
  22. 5
  23. 9
  24. 49.5
  25. 315
  26. 15
  27. 42
  28. 360
  29. 96
  30. 6
  31. 20
  32. 11
  33. 84
  34. 88
  35. 56
  36. 161
  37. 16
  38. 21
  39. 1100
  40. 33

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