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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 320 · 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 HCF of 24 and 56.
  2. 2.Write 3/4 as a percent.
  3. 3.A car goes 100 km on 4 litres of petrol. How far can it go on 17 litres (in km)?
  4. 4.Write 3/25 as a percent.
  5. 5.8/12 − 2/6 =
  6. 6.Find the LCM of 14, 12 and 4.
  7. 7.Which is closest to 300 × 41? (Round each number first.) (a) 1200 (b) 24000 (c) 12000 (d) 120000
  8. 8.7 : 13 = 56 : ?
  9. 9.5.2 × 3 =
  10. 10.Find the LCM of 25 and 35.
  11. 11.How many factors does 98 have?
  12. 12.Two tanks hold 270 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.Find the LCM of 4, 6 and 7.
  14. 14.63.7 ÷ 7 =
  15. 15.What is 5% of 440?
  16. 16.Divide ₹65 between Tara and Meera in the ratio 6 : 7. How much does Meera get (in ₹)?
  17. 17.1/2 of 20 + 5 × 6 =
  18. 18.Isha scored 3 marks out of 50 in a test. What percentage did Isha score?
  19. 19.If 11 notebooks cost ₹374, how much do 19 notebooks cost (in ₹)?
  20. 20.5/12 + 5/8 =
  21. 21.6 painters can paint a school in 12 days. How many days would 8 painters take, working at the same speed?
  22. 22.Round 62.34 to one decimal place. =
  23. 23.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 3, 15 or 10.
  24. 24.If 2 erasers cost ₹92, how much do 8 erasers cost (in ₹)?
  25. 25.The ratio of boys to girls in a class is 7 : 1. There are 35 boys. How many girls are there?
  26. 26.9/11 + 1/6 =
  27. 27.What is the smallest number you must take away from 914 so that it divides exactly by 4?
  28. 28.A car goes 210 km on 10 litres of petrol. How far can it go on 22 litres (in km)?
  29. 29.Which of these numbers divides exactly by 4? (a) 9855 (b) 6409 (c) 2878 (d) 1548
  30. 30.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 5, 3 or 9.
  31. 31.What is 25% of 580?
  32. 32.38 + 11 × 2 − 23 =
  33. 33.12 painters can paint a school in 18 days. How many days would 24 painters take, working at the same speed?
  34. 34.(17 + 12) × 9 − 4 =
  35. 35.Round 47804 to the nearest thousand.
  36. 36.4/7 × 4/5 =
  37. 37.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  38. 38.What is the smallest number you must take away from 538 so that it divides exactly by 4?
  39. 39.5 × (15 − 13) + 12 ÷ 4 =
  40. 40.Which of these numbers divides exactly by 3? (a) 6854 (b) 5165 (c) 9857 (d) 2577

Answer key

  1. 8
  2. 75
  3. 425
  4. 12
  5. 1/3
  6. 84
  7. 12000
  8. 104
  9. 15.6
  10. 175
  11. 6
  12. 30
  13. 84
  14. 9.1
  15. 22
  16. 35
  17. 40
  18. 6
  19. 646
  20. 25/24
  21. 9
  22. 62.3
  23. 31
  24. 368
  25. 5
  26. 65/66
  27. 2
  28. 462
  29. 1548
  30. 46
  31. 145
  32. 37
  33. 9
  34. 257
  35. 48000
  36. 16/35
  37. 32
  38. 2
  39. 13
  40. 2577

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