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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 801 · 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 5, 30 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.8.5 × 6 =
  3. 3.Divide ₹63 between Nisha and Karan in the ratio 4 : 5. How much does Karan get (in ₹)?
  4. 4.Karan scored 12 marks out of 40 in a test. What percentage did Karan score?
  5. 5.Find the LCM of 6 and 9.
  6. 6.4/5 − 1/3 =
  7. 7.Find the LCM of 6, 4 and 2.
  8. 8.Dev takes 54 seconds and Meera takes 72 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?
  9. 9.9/10 − 9/11 =
  10. 10.Find the HCF of 28 and 21.
  11. 11.9 : 10 = 81 : ?
  12. 12.3/10 + 10/11 =
  13. 13.10% of a number is 18. What is the number?
  14. 14.The ratio of boys to girls in a class is 9 : 8. There are 63 boys. How many girls are there?
  15. 15.1/2 + 8/12 =
  16. 16.What is 75% of 96?
  17. 17.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 5 or 9.
  18. 18.10 painters can paint a school in 4 days. How many days would 8 painters take, working at the same speed?
  19. 19.Find the LCM of 6, 8 and 7.
  20. 20.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  21. 21.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 3, 6 or 12.
  22. 22.7.2 ÷ 4 =
  23. 23.If 11 pencil boxes cost ₹231, how much do 4 pencil boxes cost (in ₹)?
  24. 24.If 5 kg of rice costs ₹335, how many kg can you buy for ₹871?
  25. 25.Two tanks hold 80 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.Round 62949 to the nearest hundred.
  27. 27.How many factors does 24 have?
  28. 28.4 : 7 = 28 : ?
  29. 29.2.5 × 2 =
  30. 30.Find the LCM of 2, 5 and 14.
  31. 31.What is the smallest number you must add to 199 so that it divides exactly by 11?
  32. 32.Three temple bells ring every 5, 9 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  33. 33.Find the LCM of 8 and 14.
  34. 34.Which of these numbers divides exactly by 4? (a) 4862 (b) 9631 (c) 1922 (d) 3908
  35. 35.Two tanks hold 160 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.3.85 + 9.4 =
  37. 37.What is 5% of 260?
  38. 38.What is the smallest number you must add to 329 so that it divides exactly by 11?
  39. 39.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  40. 40.What is the smallest number you must add to 149 so that it divides exactly by 11?

Answer key

  1. 90
  2. 51
  3. 35
  4. 30
  5. 18
  6. 7/15
  7. 12
  8. 216
  9. 9/110
  10. 7
  11. 90
  12. 133/110
  13. 180
  14. 56
  15. 7/6
  16. 72
  17. 182
  18. 5
  19. 168
  20. 100
  21. 14
  22. 1.8
  23. 84
  24. 13
  25. 40
  26. 62900
  27. 8
  28. 49
  29. 5
  30. 70
  31. 10
  32. 90
  33. 56
  34. 3908
  35. 20
  36. 13.25
  37. 13
  38. 1
  39. 18
  40. 5

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