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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 359 · 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. 1.7/9 − 1/4 =
  2. 2.What is the smallest number you must add to 330 so that it divides exactly by 4?
  3. 3.Find the HCF of 64 and 56.
  4. 4.A hall floor is 125 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  5. 5.The HCF of two numbers is 7 and their LCM is 84. One of the numbers is 28. What is the other number?
  6. 6.What is the smallest number you must add to 392 so that it divides exactly by 3?
  7. 7.Priya takes 36 seconds and Rohan 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?
  8. 8.15% of a number is 75. What is the number?
  9. 9.If 3 notebooks cost ₹171, how much do 16 notebooks cost (in ₹)?
  10. 10.Find the LCM of 11, 9 and 6.
  11. 11.How many factors does 66 have?
  12. 12.2.5 × 7 =
  13. 13.Which is closest to 897 × 71? (Round each number first.) (a) 630000 (b) 126000 (c) 6300 (d) 63000
  14. 14.If 12 pens cost ₹636, how much do 7 pens cost (in ₹)?
  15. 15.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 4 or 8.
  16. 16.Which is closest to 496 × 71? (Round each number first.) (a) 70000 (b) 350000 (c) 35000 (d) 3500
  17. 17.A car goes 24 km on 2 litres of petrol. How far can it go on 31 litres (in km)?
  18. 18.1/2 × 4/12 =
  19. 19.Kabir scored 47 marks out of 50 in a test. What percentage did Kabir score?
  20. 20.Which is closest to 596 × 51? (Round each number first.) (a) 300000 (b) 3000 (c) 30000 (d) 60000
  21. 21.The ratio of boys to girls in a class is 5 : 3. There are 15 boys. How many girls are there?
  22. 22.What is the smallest number you must add to 687 so that it divides exactly by 4?
  23. 23.7/12 × 1/6 =
  24. 24.The ratio of boys to girls in a class is 4 : 9. There are 40 boys. How many girls are there?
  25. 25.Two tanks hold 50 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.Find the LCM of 7, 6 and 12.
  27. 27.Round 53796 to the nearest hundred.
  28. 28.A car goes 48 km on 2 litres of petrol. How far can it go on 37 litres (in km)?
  29. 29.Find the smallest number bigger than 8 that leaves a remainder of 3 when divided by 5, 4 or 8.
  30. 30.36 ÷ 6 × 9 + 15 =
  31. 31.A car goes 180 km on 12 litres of petrol. How far can it go on 28 litres (in km)?
  32. 32.(19 + 9) × 7 − 11 =
  33. 33.Find the smallest number bigger than 8 that leaves a remainder of 1 when divided by 4, 8 or 5.
  34. 34.What is the smallest number you must take away from 697 so that it divides exactly by 11?
  35. 35.If 3 notebooks cost ₹135, how much do 6 notebooks cost (in ₹)?
  36. 36.3/5 of 30 + 4 × 8 =
  37. 37.If 3 kg of rice costs ₹153, how many kg can you buy for ₹204?
  38. 38.Which is closest to 2107 ÷ 29? (a) 70 (b) 35 (c) 700 (d) 140
  39. 39.3/10 + 2/3 =
  40. 40.Write 1/2 as a percent.

Answer key

  1. 19/36
  2. 2
  3. 8
  4. 15
  5. 21
  6. 1
  7. 108
  8. 500
  9. 912
  10. 198
  11. 8
  12. 17.5
  13. 63000
  14. 371
  15. 41
  16. 35000
  17. 372
  18. 1/6
  19. 94
  20. 30000
  21. 9
  22. 1
  23. 7/72
  24. 90
  25. 10
  26. 84
  27. 53800
  28. 888
  29. 43
  30. 69
  31. 420
  32. 185
  33. 41
  34. 4
  35. 270
  36. 50
  37. 4
  38. 70
  39. 29/30
  40. 50

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