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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 218 · 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. 1.1/3 + 2/6 =
  2. 2.Manav scored 38 marks out of 40 in a test. What percentage did Manav score?
  3. 3.Farhan takes 60 seconds and Manav takes 80 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?
  4. 4.If 2 kites cost ₹72, how much do 20 kites cost (in ₹)?
  5. 5.The HCF of two numbers is 9 and their LCM is 324. One of the numbers is 81. What is the other number?
  6. 6.3/12 + 4/11 =
  7. 7.Which is closest to 600 + 498 + 705? (a) 1700 (b) 1800 (c) 2000 (d) 1900
  8. 8.Find the HCF of 112 and 126.
  9. 9.The HCF of two numbers is 3 and their LCM is 90. One of the numbers is 15. What is the other number?
  10. 10.Find the HCF of 77 and 22.
  11. 11.What is the smallest number you must add to 785 so that it divides exactly by 11?
  12. 12.What is 1/8 of 56 km?
  13. 13.5/8 of 24 + 2 × 6 =
  14. 14.The ratio of boys to girls in a class is 2 : 9. There are 10 boys. How many girls are there?
  15. 15.Write 9/10 as a percent.
  16. 16.16 − 30 ÷ 6 × 2 =
  17. 17.What is the smallest number you must take away from 189 so that it divides exactly by 11?
  18. 18.A car goes 30 km on 2 litres of petrol. How far can it go on 7 litres (in km)?
  19. 19.How many factors does 69 have?
  20. 20.10 : 6 = 30 : ?
  21. 21.Round 69.84 to one decimal place. =
  22. 22.Two tanks hold 45 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  23. 23.3 × (25 − 8) + 6 ÷ 3 =
  24. 24.The ratio of boys to girls in a class is 1 : 9. There are 7 boys. How many girls are there?
  25. 25.49 + 3 × 4 − 7 =
  26. 26.Which is closest to 299 × 30? (Round each number first.) (a) 18000 (b) 90000 (c) 9000 (d) 900
  27. 27.What is the smallest number you must add to 548 so that it divides exactly by 7?
  28. 28.3 × (30 − 13) + 20 ÷ 4 =
  29. 29.4 × (15 − 1) + 48 ÷ 8 =
  30. 30.A car goes 88 km on 8 litres of petrol. How far can it go on 10 litres (in km)?
  31. 31.The HCF of two numbers is 5 and their LCM is 50. One of the numbers is 10. What is the other number?
  32. 32.(14 + 13) × 8 − 8 =
  33. 33.Find the HCF of 6 and 27.
  34. 34.If 2 pens cost ₹6, how much do 3 pens cost (in ₹)?
  35. 35.Find the LCM of 12 and 18.
  36. 36.Which is closest to 105 + 505 + 797? (a) 1500 (b) 1400 (c) 1300 (d) 1600
  37. 37.Find the LCM of 2 and 9.
  38. 38.If 10 kites cost ₹130, how much do 15 kites cost (in ₹)?
  39. 39.The HCF of two numbers is 2 and their LCM is 60. One of the numbers is 10. What is the other number?
  40. 40.Find the HCF of 36 and 63.

Answer key

  1. 2/3
  2. 95
  3. 240
  4. 720
  5. 36
  6. 27/44
  7. 1800
  8. 14
  9. 18
  10. 11
  11. 7
  12. 7
  13. 27
  14. 45
  15. 90
  16. 6
  17. 2
  18. 105
  19. 4
  20. 18
  21. 69.8
  22. 5
  23. 53
  24. 63
  25. 54
  26. 9000
  27. 5
  28. 56
  29. 62
  30. 110
  31. 25
  32. 208
  33. 3
  34. 9
  35. 36
  36. 1400
  37. 18
  38. 195
  39. 12
  40. 9

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