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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 94 · 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.A car goes 132 km on 11 litres of petrol. How far can it go on 14 litres (in km)?
  2. 2.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 10, 3 or 5.
  3. 3.40 ÷ 4 × 9 + 20 =
  4. 4.Sneha takes 72 seconds and Ananya takes 60 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?
  5. 5.Find the LCM of 7 and 4.
  6. 6.The HCF of two numbers is 8 and their LCM is 120. One of the numbers is 24. What is the other number?
  7. 7.Find the LCM of 14 and 6.
  8. 8.How many factors does 73 have?
  9. 9.Which is closest to 399 × 82? (Round each number first.) (a) 3200 (b) 32000 (c) 320000 (d) 64000
  10. 10.1/7 + 1/2 =
  11. 11.Which of these numbers divides exactly by 9? (a) 1330 (b) 3100 (c) 7314 (d) 9558
  12. 12.If 6 bottles of juice cost ₹276, how much do 4 bottles of juice cost (in ₹)?
  13. 13.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  14. 14.7.7 × 4 =
  15. 15.A car goes 32 km on 2 litres of petrol. How far can it go on 21 litres (in km)?
  16. 16.Three temple bells ring every 12, 5 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.Three temple bells ring every 12, 6 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.Find the HCF of 36 and 20.
  19. 19.Which is closest to 2503 ÷ 51? (a) 500 (b) 100 (c) 50 (d) 25
  20. 20.12 : 5 = 48 : ?
  21. 21.3 : 6 = 24 : ?
  22. 22.Find the LCM of 3, 12 and 7.
  23. 23.What is the smallest number you must add to 648 so that it divides exactly by 13?
  24. 24.5/12 − 1/3 =
  25. 25.Sneha scored 17 marks out of 20 in a test. What percentage did Sneha score?
  26. 26.Round 67.07 to one decimal place. =
  27. 27.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  28. 28.Isha scored 45 marks out of 50 in a test. What percentage did Isha score?
  29. 29.5.4 × 8 =
  30. 30.2 : 15 = 10 : ?
  31. 31.Find the LCM of 6, 5 and 3.
  32. 32.How many factors does 48 have?
  33. 33.Manav takes 50 seconds and Isha takes 30 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?
  34. 34.Three temple bells ring every 4, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.Three temple bells ring every 30, 4 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.How many factors does 74 have?
  37. 37.Find the smallest number bigger than 6 that leaves a remainder of 2 when divided by 6, 3 or 5.
  38. 38.Write 3/5 as a percent.
  39. 39.1/2 + 8/9 =
  40. 40.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 4 or 8.

Answer key

  1. 168
  2. 32
  3. 110
  4. 360
  5. 28
  6. 40
  7. 42
  8. 2
  9. 32000
  10. 9/14
  11. 9558
  12. 184
  13. 72
  14. 30.8
  15. 336
  16. 60
  17. 36
  18. 4
  19. 50
  20. 20
  21. 48
  22. 84
  23. 2
  24. 1/12
  25. 85
  26. 67.1
  27. 8
  28. 90
  29. 43.2
  30. 75
  31. 30
  32. 10
  33. 150
  34. 60
  35. 60
  36. 4
  37. 32
  38. 60
  39. 25/18
  40. 41

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