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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 722 · 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.Round 21.81 to one decimal place. =
  2. 2.What is the smallest number you must take away from 247 so that it divides exactly by 4?
  3. 3.What is 3/5 of 145 litres?
  4. 4.Aarav takes 50 seconds and Manav takes 80 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.The HCF of two numbers is 6 and their LCM is 180. One of the numbers is 36. What is the other number?
  6. 6.A car goes 36 km on 3 litres of petrol. How far can it go on 10 litres (in km)?
  7. 7.3/8 of 80 + 8 × 8 =
  8. 8.What is the smallest number you must add to 770 so that it divides exactly by 3?
  9. 9.(4 + 12) × 6 − 26 =
  10. 10.What is the smallest number you must add to 749 so that it divides exactly by 3?
  11. 11.Write 39/50 as a percent.
  12. 12.9 : 3 = 63 : ?
  13. 13.Divide ₹440 between Pooja and Manav in the ratio 7 : 4. How much does Pooja get (in ₹)?
  14. 14.18 + 12 × 5 − 15 =
  15. 15.A hall floor is 200 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  16. 16.The ratio of boys to girls in a class is 9 : 1. There are 45 boys. How many girls are there?
  17. 17.Round 6423 to the nearest hundred.
  18. 18.Aditya takes 90 seconds and Sneha takes 48 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.How many factors does 12 have?
  20. 20.If 2 kg of rice costs ₹88, how many kg can you buy for ₹176?
  21. 21.Three temple bells ring every 8, 6 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Find the LCM of 40 and 35.
  23. 23.4.6 × 8 =
  24. 24.What is the smallest number you must add to 910 so that it divides exactly by 12?
  25. 25.12 ÷ 4 × 2 + 13 =
  26. 26.What is 6/7 of ₹182?
  27. 27.The HCF of two numbers is 5 and their LCM is 60. One of the numbers is 20. What is the other number?
  28. 28.Divide ₹54 between Isha and Manav in the ratio 2 : 1. How much does Manav get (in ₹)?
  29. 29.3 : 15 = 24 : ?
  30. 30.Nisha takes 90 seconds and Meera takes 60 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?
  31. 31.Zoya scored 23 marks out of 50 in a test. What percentage did Zoya score?
  32. 32.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.What percent of 25 is 7?
  34. 34.How many factors does 17 have?
  35. 35.A hall floor is 80 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.What is 4/7 of 42 km?
  37. 37.What is 4/7 of ₹189?
  38. 38.4/10 + 1/2 =
  39. 39.Ananya scored 20 marks out of 25 in a test. What percentage did Ananya score?
  40. 40.Which is closest to 901 × 29? (Round each number first.) (a) 270000 (b) 2700 (c) 27000 (d) 54000

Answer key

  1. 21.8
  2. 3
  3. 87
  4. 400
  5. 30
  6. 120
  7. 94
  8. 1
  9. 70
  10. 1
  11. 78
  12. 21
  13. 280
  14. 63
  15. 24
  16. 5
  17. 6400
  18. 720
  19. 6
  20. 4
  21. 120
  22. 280
  23. 36.8
  24. 2
  25. 19
  26. 156
  27. 15
  28. 18
  29. 120
  30. 180
  31. 46
  32. 20
  33. 28
  34. 2
  35. 12
  36. 24
  37. 108
  38. 9/10
  39. 80
  40. 27000

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