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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 92 · 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 52 km on 4 litres of petrol. How far can it go on 39 litres (in km)?
  2. 2.Find the LCM of 36 and 30.
  3. 3.3 : 6 = 6 : ?
  4. 4.18 − 6 ÷ 3 × 4 =
  5. 5.What is 1/3 of 75 kg?
  6. 6.3/4 + 1/2 =
  7. 7.Ananya takes 45 seconds and Karan takes 50 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.Round 33.29 to one decimal place. =
  9. 9.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  10. 10.What is 3/10 of 140 km?
  11. 11.How many factors does 48 have?
  12. 12.Two tanks hold 60 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.(13 + 6) × 5 − 10 =
  14. 14.25% of a number is 18. What is the number?
  15. 15.Two tanks hold 70 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.A hall floor is 480 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.5 × (19 − 9) + 8 ÷ 2 =
  18. 18.What is 10% of 380?
  19. 19.Find the HCF of 35 and 30.
  20. 20.Round 22.43 to one decimal place. =
  21. 21.Which is closest to 396 + 595 + 495? (a) 1400 (b) 1600 (c) 1700 (d) 1500
  22. 22.How many factors does 58 have?
  23. 23.Nisha takes 75 seconds and Ananya takes 50 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?
  24. 24.1/2 × 7/9 =
  25. 25.The ratio of boys to girls in a class is 1 : 7. There are 10 boys. How many girls are there?
  26. 26.15% of a number is 81. What is the number?
  27. 27.Find the HCF of 15 and 27.
  28. 28.A car goes 63 km on 3 litres of petrol. How far can it go on 27 litres (in km)?
  29. 29.The ratio of boys to girls in a class is 3 : 2. There are 15 boys. How many girls are there?
  30. 30.If 4 pencil boxes cost ₹32, how much do 7 pencil boxes cost (in ₹)?
  31. 31.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  32. 32.1/2 + 1/12 =
  33. 33.The HCF of two numbers is 9 and their LCM is 180. One of the numbers is 36. What is the other number?
  34. 34.How many factors does 30 have?
  35. 35.What is the smallest number you must take away from 526 so that it divides exactly by 4?
  36. 36.Round 33.32 to one decimal place. =
  37. 37.12% of a number is 48. What is the number?
  38. 38.Two tanks hold 50 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  39. 39.Which of these numbers divides exactly by 6? (a) 8094 (b) 2237 (c) 3879 (d) 5557
  40. 40.15% of a number is 9. What is the number?

Answer key

  1. 507
  2. 180
  3. 12
  4. 10
  5. 25
  6. 5/4
  7. 450
  8. 33.3
  9. 12
  10. 42
  11. 10
  12. 15
  13. 85
  14. 72
  15. 10
  16. 24
  17. 54
  18. 38
  19. 5
  20. 22.4
  21. 1500
  22. 4
  23. 150
  24. 7/18
  25. 70
  26. 540
  27. 3
  28. 567
  29. 10
  30. 56
  31. 18
  32. 7/12
  33. 45
  34. 8
  35. 2
  36. 33.3
  37. 400
  38. 10
  39. 8094
  40. 60

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