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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 610 · 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 6, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Find the LCM of 2, 15 and 10.
  3. 3.If 3 kg of rice costs ₹159, how many kg can you buy for ₹424?
  4. 4.Round 88.66 to one decimal place. =
  5. 5.What is 2/3 of 54 km?
  6. 6.1/4 − 1/9 =
  7. 7.A hall floor is 420 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.Round 90.46 to one decimal place. =
  9. 9.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  10. 10.43 − 16 ÷ 8 × 4 =
  11. 11.What is the smallest number you must take away from 385 so that it divides exactly by 3?
  12. 12.How many factors does 21 have?
  13. 13.2/3 × 4/10 =
  14. 14.Find the LCM of 6 and 10.
  15. 15.Which is closest to 3996 ÷ 49? (a) 80 (b) 800 (c) 40 (d) 160
  16. 16.4 × (19 − 1) + 27 ÷ 9 =
  17. 17.What is the smallest number you must take away from 303 so that it divides exactly by 9?
  18. 18.Tara takes 60 seconds and Nisha 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?
  19. 19.1/3 × 6/10 =
  20. 20.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  21. 21.Round 68.48 to one decimal place. =
  22. 22.A hall floor is 250 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.Aditya takes 75 seconds and Nisha 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?
  24. 24.If 5 bottles of juice cost ₹90, how much do 10 bottles of juice cost (in ₹)?
  25. 25.Divide ₹530 between Tara and Aarav in the ratio 9 : 1. How much does Tara get (in ₹)?
  26. 26.2.2 × 7 =
  27. 27.If 7 erasers cost ₹224, how much do 2 erasers cost (in ₹)?
  28. 28.3/7 × 3/4 =
  29. 29.What is the smallest number you must add to 815 so that it divides exactly by 6?
  30. 30.Find the LCM of 11, 5 and 2.
  31. 31.What is 1/5 of ₹125?
  32. 32.If 7 kg of rice costs ₹434, how many kg can you buy for ₹186?
  33. 33.Round 83042 to the nearest thousand.
  34. 34.5 × (18 − 7) + 6 ÷ 3 =
  35. 35.28 + 4 × 3 − 4 =
  36. 36.The ratio of boys to girls in a class is 6 : 1. There are 54 boys. How many girls are there?
  37. 37.2/4 − 3/8 =
  38. 38.What is the smallest number you must take away from 130 so that it divides exactly by 7?
  39. 39.Which is closest to 500 × 88? (Round each number first.) (a) 4500 (b) 450000 (c) 90000 (d) 45000
  40. 40.If 3 pens cost ₹27, how much do 2 pens cost (in ₹)?

Answer key

  1. 60
  2. 30
  3. 8
  4. 88.7
  5. 36
  6. 5/36
  7. 14
  8. 90.5
  9. 48
  10. 35
  11. 1
  12. 4
  13. 4/15
  14. 30
  15. 80
  16. 75
  17. 6
  18. 300
  19. 1/5
  20. 32
  21. 68.5
  22. 10
  23. 225
  24. 180
  25. 477
  26. 15.4
  27. 64
  28. 9/28
  29. 1
  30. 110
  31. 25
  32. 3
  33. 83000
  34. 57
  35. 36
  36. 9
  37. 1/8
  38. 4
  39. 45000
  40. 18

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