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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 743 · 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.Round 66785 to the nearest hundred.
  2. 2.What is the smallest number you must add to 938 so that it divides exactly by 6?
  3. 3.Which is closest to 800 × 71? (Round each number first.) (a) 56000 (b) 560000 (c) 5600 (d) 112000
  4. 4.Priya takes 48 seconds and Kavya takes 54 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 HCF of 8 and 18.
  6. 6.Find the LCM of 16 and 18.
  7. 7.If 3 notebooks cost ₹111, how much do 15 notebooks cost (in ₹)?
  8. 8.A car goes 90 km on 10 litres of petrol. How far can it go on 11 litres (in km)?
  9. 9.43 + 12 × 2 − 42 =
  10. 10.A car goes 33 km on 3 litres of petrol. How far can it go on 4 litres (in km)?
  11. 11.How many factors does 53 have?
  12. 12.How many factors does 32 have?
  13. 13.7.6 × 5 =
  14. 14.48 + 6 × 9 − 3 =
  15. 15.Find the LCM of 7, 10 and 2.
  16. 16.What percent of 40 is 28?
  17. 17.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  18. 18.If 8 cricket balls cost ₹408, how much do 3 cricket balls cost (in ₹)?
  19. 19.The ratio of boys to girls in a class is 9 : 7. There are 90 boys. How many girls are there?
  20. 20.Find the LCM of 4, 5 and 8.
  21. 21.6.3 × 4 =
  22. 22.How many factors does 34 have?
  23. 23.Which is closest to 992 ÷ 51? (a) 40 (b) 10 (c) 20 (d) 200
  24. 24.Three temple bells ring every 30, 12 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 5, 3 or 10.
  26. 26.A hall floor is 125 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.What is the smallest number you must take away from 180 so that it divides exactly by 11?
  28. 28.A car goes 121 km on 11 litres of petrol. How far can it go on 38 litres (in km)?
  29. 29.Which is closest to 603 × 30? (Round each number first.) (a) 36000 (b) 1800 (c) 18000 (d) 180000
  30. 30.If 5 kg of rice costs ₹350, how many kg can you buy for ₹490?
  31. 31.20% of a number is 50. What is the number?
  32. 32.3 : 11 = 27 : ?
  33. 33.Divide ₹495 between Diya and Farhan in the ratio 9 : 2. How much does Diya get (in ₹)?
  34. 34.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 9, 3 or 4.
  35. 35.If 11 erasers cost ₹77, how much do 19 erasers cost (in ₹)?
  36. 36.What percent of 500 is 40?
  37. 37.2/8 + 3/7 =
  38. 38.A hall floor is 240 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.How many factors does 27 have?
  40. 40.15 ÷ 5 × 2 + 30 =

Answer key

  1. 66800
  2. 4
  3. 56000
  4. 432
  5. 2
  6. 144
  7. 555
  8. 99
  9. 25
  10. 44
  11. 2
  12. 6
  13. 38
  14. 99
  15. 70
  16. 70
  17. 75
  18. 153
  19. 70
  20. 40
  21. 25.2
  22. 4
  23. 20
  24. 60
  25. 32
  26. 10
  27. 4
  28. 418
  29. 18000
  30. 7
  31. 250
  32. 99
  33. 405
  34. 38
  35. 133
  36. 8
  37. 19/28
  38. 30
  39. 4
  40. 36

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