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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 4 · 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 and 9.
  2. 2.The HCF of two numbers is 9 and their LCM is 270. One of the numbers is 45. What is the other number?
  3. 3.Write 1/2 as a percent.
  4. 4.Aarav takes 45 seconds and Rahul 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?
  5. 5.Three temple bells ring every 20, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Which is closest to 296 + 102 + 905? (a) 1300 (b) 1400 (c) 1500 (d) 1200
  7. 7.26 + 12 × 9 − 23 =
  8. 8.Round 31677 to the nearest hundred.
  9. 9.A hall floor is 240 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.What is the smallest number you must take away from 571 so that it divides exactly by 13?
  11. 11.Dev scored 20 marks out of 40 in a test. What percentage did Dev score?
  12. 12.4/8 × 1/4 =
  13. 13.Find the HCF of 36 and 20.
  14. 14.Which of these numbers divides exactly by 4? (a) 1420 (b) 2735 (c) 9889 (d) 7190
  15. 15.Write 3/50 as a percent.
  16. 16.A car goes 135 km on 9 litres of petrol. How far can it go on 34 litres (in km)?
  17. 17.Find the HCF of 91 and 104.
  18. 18.The HCF of two numbers is 5 and their LCM is 90. One of the numbers is 45. What is the other number?
  19. 19.Divide ₹176 between Arjun and Dev in the ratio 8 : 3. How much does Arjun get (in ₹)?
  20. 20.Round 80254 to the nearest ten.
  21. 21.What is 12% of 50?
  22. 22.39 + 5 × 8 − 39 =
  23. 23.What is 7/9 of 225 students?
  24. 24.12 + 3 × 5 − 4 =
  25. 25.Which of these numbers divides exactly by 11? (a) 8326 (b) 7711 (c) 2129 (d) 6582
  26. 26.Find the HCF of 48 and 56.
  27. 27.Round 80662 to the nearest hundred.
  28. 28.1/6 of 24 + 4 × 2 =
  29. 29.Write 1/20 as a percent.
  30. 30.Find the LCM of 42 and 18.
  31. 31.1/9 × 1/12 =
  32. 32.Find the HCF of 81 and 18.
  33. 33.Two tanks hold 40 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.If 2 kg of rice costs ₹112, how many kg can you buy for ₹504?
  35. 35.A car goes 100 km on 4 litres of petrol. How far can it go on 5 litres (in km)?
  36. 36.Which is closest to 696 × 88? (Round each number first.) (a) 630000 (b) 126000 (c) 63000 (d) 6300
  37. 37.Write 9/50 as a percent.
  38. 38.If 8 kg of rice costs ₹512, how many kg can you buy for ₹704?
  39. 39.Round 41.93 to one decimal place. =
  40. 40.Two tanks hold 20 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?

Answer key

  1. 72
  2. 54
  3. 50
  4. 360
  5. 120
  6. 1300
  7. 111
  8. 31700
  9. 40
  10. 12
  11. 50
  12. 1/8
  13. 4
  14. 1420
  15. 6
  16. 510
  17. 13
  18. 10
  19. 128
  20. 80250
  21. 6
  22. 40
  23. 175
  24. 23
  25. 7711
  26. 8
  27. 80700
  28. 12
  29. 5
  30. 126
  31. 1/108
  32. 9
  33. 20
  34. 9
  35. 125
  36. 63000
  37. 18
  38. 11
  39. 41.9
  40. 5

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