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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 140 · 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 30 km on 3 litres of petrol. How far can it go on 7 litres (in km)?
  2. 2.2/3 + 7/9 =
  3. 3.54 ÷ 6 × 8 + 26 =
  4. 4.1/7 × 4/5 =
  5. 5.The HCF of two numbers is 8 and their LCM is 280. One of the numbers is 56. What is the other number?
  6. 6.What is 60% of 350?
  7. 7.What is the smallest number you must take away from 589 so that it divides exactly by 4?
  8. 8.The ratio of boys to girls in a class is 4 : 9. There are 16 boys. How many girls are there?
  9. 9.57 − 20 ÷ 4 × 6 =
  10. 10.What is the smallest number you must take away from 145 so that it divides exactly by 6?
  11. 11.Round 64051 to the nearest ten.
  12. 12.Find the HCF of 135 and 60.
  13. 13.1/3 + 9/11 =
  14. 14.A car goes 75 km on 3 litres of petrol. How far can it go on 11 litres (in km)?
  15. 15.Find the LCM of 12, 8 and 7.
  16. 16.Round 37.79 to one decimal place. =
  17. 17.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 9, 3 or 5.
  18. 18.14 ÷ 7 × 5 + 3 =
  19. 19.55 ÷ 5 × 3 + 29 =
  20. 20.What is the smallest number you must add to 316 so that it divides exactly by 3?
  21. 21.A car goes 26 km on 2 litres of petrol. How far can it go on 31 litres (in km)?
  22. 22.The HCF of two numbers is 3 and their LCM is 120. One of the numbers is 24. What is the other number?
  23. 23.Which is closest to 398 × 92? (Round each number first.) (a) 3600 (b) 36000 (c) 72000 (d) 360000
  24. 24.Rahul takes 40 seconds and Ananya 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?
  25. 25.Three temple bells ring every 30, 15 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.58 − 15 ÷ 3 × 4 =
  27. 27.If 3 pencil boxes cost ₹48, how much do 5 pencil boxes cost (in ₹)?
  28. 28.What is the smallest number you must add to 633 so that it divides exactly by 11?
  29. 29.Zoya scored 4 marks out of 40 in a test. What percentage did Zoya score?
  30. 30.Two tanks hold 150 litres and 125 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.Three temple bells ring every 18, 15 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.6 × (13 − 6) + 48 ÷ 6 =
  33. 33.Two tanks hold 405 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  34. 34.8 − 4 ÷ 2 × 2 =
  35. 35.A hall floor is 300 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.Which is closest to 303 + 498 + 201? (a) 1000 (b) 1100 (c) 1200 (d) 900
  37. 37.What is the smallest number you must add to 338 so that it divides exactly by 6?
  38. 38.The HCF of two numbers is 8 and their LCM is 240. One of the numbers is 40. What is the other number?
  39. 39.7.55 + 2.8 =
  40. 40.(19 + 12) × 8 − 8 =

Answer key

  1. 70
  2. 13/9
  3. 98
  4. 4/35
  5. 40
  6. 210
  7. 1
  8. 36
  9. 27
  10. 1
  11. 64050
  12. 15
  13. 38/33
  14. 275
  15. 168
  16. 37.8
  17. 47
  18. 13
  19. 62
  20. 2
  21. 403
  22. 15
  23. 36000
  24. 360
  25. 120
  26. 38
  27. 80
  28. 5
  29. 10
  30. 25
  31. 90
  32. 50
  33. 45
  34. 4
  35. 30
  36. 1000
  37. 4
  38. 48
  39. 10.35
  40. 240

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