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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 53 · 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 14, 5 and 7.
  2. 2.What is 1/2 of 52 kg?
  3. 3.What is 80% of 65?
  4. 4.Round 64863 to the nearest thousand.
  5. 5.Three temple bells ring every 10, 30 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  7. 7.A car goes 75 km on 3 litres of petrol. How far can it go on 14 litres (in km)?
  8. 8.Round 71.36 to one decimal place. =
  9. 9.Sneha scored 48 marks out of 80 in a test. What percentage did Sneha score?
  10. 10.12 ÷ 3 × 3 + 21 =
  11. 11.Find the HCF of 6 and 8.
  12. 12.The ratio of boys to girls in a class is 1 : 7. There are 5 boys. How many girls are there?
  13. 13.The ratio of boys to girls in a class is 5 : 4. There are 20 boys. How many girls are there?
  14. 14.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  15. 15.Which is closest to 3496 ÷ 49? (a) 140 (b) 700 (c) 70 (d) 35
  16. 16.What is the smallest number you must take away from 916 so that it divides exactly by 11?
  17. 17.36 − 18 ÷ 2 × 3 =
  18. 18.35 + 2 × 12 − 12 =
  19. 19.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 18. What is the other number?
  20. 20.Round 87.83 to one decimal place. =
  21. 21.Which is closest to 503 × 71? (Round each number first.) (a) 70000 (b) 3500 (c) 35000 (d) 350000
  22. 22.2/4 − 1/3 =
  23. 23.9 : 7 = 54 : ?
  24. 24.96 ÷ 8 × 9 + 12 =
  25. 25.Find the LCM of 11, 2 and 3.
  26. 26.Which is closest to 1601 ÷ 41? (a) 20 (b) 80 (c) 40 (d) 400
  27. 27.Which is closest to 196 × 81? (Round each number first.) (a) 16000 (b) 32000 (c) 1600 (d) 160000
  28. 28.22 + 5 × 9 − 5 =
  29. 29.The ratio of boys to girls in a class is 3 : 7. There are 6 boys. How many girls are there?
  30. 30.A hostel has enough food for 7 students for 24 days. How many days will the same food last for 21 students?
  31. 31.Round 99568 to the nearest ten.
  32. 32.If 3 erasers cost ₹39, how much do 8 erasers cost (in ₹)?
  33. 33.Round 83.51 to one decimal place. =
  34. 34.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 3, 8 or 4.
  35. 35.The HCF of two numbers is 4 and their LCM is 252. One of the numbers is 28. What is the other number?
  36. 36.6/9 + 4/6 =
  37. 37.A hall floor is 400 cm long and 350 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  38. 38.8 ÷ 2 × 5 + 28 =
  39. 39.How many factors does 54 have?
  40. 40.If 5 bottles of juice cost ₹55, how much do 18 bottles of juice cost (in ₹)?

Answer key

  1. 70
  2. 26
  3. 52
  4. 65000
  5. 90
  6. 16
  7. 350
  8. 71.4
  9. 60
  10. 33
  11. 2
  12. 35
  13. 16
  14. 18
  15. 70
  16. 3
  17. 9
  18. 47
  19. 8
  20. 87.8
  21. 35000
  22. 1/6
  23. 42
  24. 120
  25. 66
  26. 40
  27. 16000
  28. 62
  29. 14
  30. 8
  31. 99570
  32. 104
  33. 83.5
  34. 26
  35. 36
  36. 4/3
  37. 56
  38. 48
  39. 8
  40. 198

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