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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 474 · 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 42 and 24.
  2. 2.29 + 4 × 3 − 27 =
  3. 3.Isha scored 13 marks out of 25 in a test. What percentage did Isha score?
  4. 4.Find the LCM of 2, 8 and 14.
  5. 5.Two tanks hold 15 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.Write 1/2 as a percent.
  7. 7.Find the HCF of 108 and 84.
  8. 8.Priya scored 8 marks out of 80 in a test. What percentage did Priya score?
  9. 9.If 3 mangoes cost ₹36, how much do 4 mangoes cost (in ₹)?
  10. 10.Round 26.41 to one decimal place. =
  11. 11.Divide ₹816 between Rohan and Ananya in the ratio 9 : 7. How much does Ananya get (in ₹)?
  12. 12.Which is closest to 300 × 91? (Round each number first.) (a) 54000 (b) 27000 (c) 2700 (d) 270000
  13. 13.What is 4/7 of 63 litres?
  14. 14.24 ÷ 8 × 9 + 14 =
  15. 15.1/2 + 1/5 =
  16. 16.A car goes 187 km on 11 litres of petrol. How far can it go on 35 litres (in km)?
  17. 17.What is the smallest number you must add to 937 so that it divides exactly by 6?
  18. 18.Rohan scored 32 marks out of 50 in a test. What percentage did Rohan score?
  19. 19.Find the LCM of 10 and 14.
  20. 20.How many factors does 34 have?
  21. 21.Round 42116 to the nearest thousand.
  22. 22.A car goes 16 km on 2 litres of petrol. How far can it go on 24 litres (in km)?
  23. 23.If 11 notebooks cost ₹33, how much do 19 notebooks cost (in ₹)?
  24. 24.Find the LCM of 3, 14 and 6.
  25. 25.Find the LCM of 25 and 40.
  26. 26.Two tanks hold 360 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.Ananya takes 50 seconds and Aditya takes 90 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?
  28. 28.Which of these numbers divides exactly by 9? (a) 1564 (b) 1557 (c) 4477 (d) 3189
  29. 29.Which is closest to 800 × 48? (Round each number first.) (a) 400000 (b) 4000 (c) 40000 (d) 80000
  30. 30.Find the LCM of 20 and 45.
  31. 31.Round 17577 to the nearest ten.
  32. 32.33 − 9 ÷ 3 × 7 =
  33. 33.Three temple bells ring every 5, 12 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.If 5 notebooks cost ₹40, how much do 8 notebooks cost (in ₹)?
  35. 35.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  36. 36.Find the LCM of 10 and 4.
  37. 37.Round 30003 to the nearest hundred.
  38. 38.How many factors does 37 have?
  39. 39.What is the smallest number you must take away from 561 so that it divides exactly by 13?
  40. 40.The HCF of two numbers is 2 and their LCM is 144. One of the numbers is 18. What is the other number?

Answer key

  1. 168
  2. 14
  3. 52
  4. 56
  5. 5
  6. 50
  7. 12
  8. 10
  9. 48
  10. 26.4
  11. 357
  12. 27000
  13. 36
  14. 41
  15. 7/10
  16. 595
  17. 5
  18. 64
  19. 70
  20. 4
  21. 42000
  22. 192
  23. 57
  24. 42
  25. 200
  26. 40
  27. 450
  28. 1557
  29. 40000
  30. 180
  31. 17580
  32. 12
  33. 120
  34. 64
  35. 16
  36. 20
  37. 30000
  38. 2
  39. 2
  40. 16

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