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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 571 · 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.Which is closest to 595 + 405 + 795? (a) 1700 (b) 1800 (c) 1900 (d) 2000
  2. 2.Find the LCM of 12 and 32.
  3. 3.What is the smallest number you must take away from 176 so that it divides exactly by 9?
  4. 4.How many factors does 71 have?
  5. 5.If 6 mangoes cost ₹60, how much do 8 mangoes cost (in ₹)?
  6. 6.What is 1/3 of 30 students?
  7. 7.Which is closest to 600 × 62? (Round each number first.) (a) 360000 (b) 3600 (c) 72000 (d) 36000
  8. 8.80% of a number is 324. What is the number?
  9. 9.How many factors does 49 have?
  10. 10.80% of a number is 272. What is the number?
  11. 11.35 + 12 × 4 − 26 =
  12. 12.Which is closest to 300 × 91? (Round each number first.) (a) 270000 (b) 2700 (c) 27000 (d) 54000
  13. 13.45 + 7 × 2 − 22 =
  14. 14.10% of a number is 45. What is the number?
  15. 15.A car goes 80 km on 5 litres of petrol. How far can it go on 27 litres (in km)?
  16. 16.(2 + 5) × 9 − 1 =
  17. 17.(2 + 9) × 7 − 23 =
  18. 18.18 − 10 ÷ 2 × 3 =
  19. 19.(8 + 17) × 5 − 2 =
  20. 20.Three temple bells ring every 5, 6 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.52.2 ÷ 9 =
  22. 22.Two tanks hold 60 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.Farhan scored 44 marks out of 80 in a test. What percentage did Farhan score?
  24. 24.Two tanks hold 100 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.A hostel has enough food for 12 students for 8 days. How many days will the same food last for 4 students?
  26. 26.The HCF of two numbers is 2 and their LCM is 126. One of the numbers is 18. What is the other number?
  27. 27.A car goes 84 km on 4 litres of petrol. How far can it go on 8 litres (in km)?
  28. 28.6.78 + 4.1 =
  29. 29.Find the HCF of 22 and 99.
  30. 30.What percent of 400 is 56?
  31. 31.Divide ₹255 between Farhan and Dev in the ratio 2 : 3. How much does Dev get (in ₹)?
  32. 32.Find the HCF of 28 and 8.
  33. 33.Which is closest to 906 ÷ 31? (a) 60 (b) 300 (c) 15 (d) 30
  34. 34.Which is closest to 198 × 41? (Round each number first.) (a) 800 (b) 80000 (c) 16000 (d) 8000
  35. 35.The HCF of two numbers is 3 and their LCM is 36. One of the numbers is 9. What is the other number?
  36. 36.Round 77.83 to one decimal place. =
  37. 37.Find the smallest number bigger than 6 that leaves a remainder of 2 when divided by 3, 6 or 4.
  38. 38.The ratio of boys to girls in a class is 4 : 7. There are 32 boys. How many girls are there?
  39. 39.9 × (11 − 10) + 16 ÷ 8 =
  40. 40.3.6 × 3 =

Answer key

  1. 1800
  2. 96
  3. 5
  4. 2
  5. 80
  6. 10
  7. 36000
  8. 405
  9. 3
  10. 340
  11. 57
  12. 27000
  13. 37
  14. 450
  15. 432
  16. 62
  17. 54
  18. 3
  19. 123
  20. 60
  21. 5.8
  22. 30
  23. 55
  24. 25
  25. 24
  26. 14
  27. 168
  28. 10.88
  29. 11
  30. 14
  31. 153
  32. 4
  33. 30
  34. 8000
  35. 12
  36. 77.8
  37. 14
  38. 56
  39. 11
  40. 10.8

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