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Practise online insteadThe answer key prints on page 2.

Write and use y = kx with whole number k

Year 8 maths · Fieldbook Learning

Name ______________________ Date __________

Replace x with the number and multiply.

  1. y = 4x. Find y when x = 6.
  2. y = 3x. Find y when x = 4.
  3. y = 5x. Find y when x = 5.
  4. y = 5x. Find y when x = 4.
  5. y = 7x. Find y when x = 9.
  6. y = 10x. Find y when x = 6.
  7. y = 7x. Find y when x = 4.
  8. y = 4x. Find y when x = 7.
  9. y = 3x. Find y when x = 5.
  10. y = 7x. Find y when x = 15.
  11. y = 4x. Find y when x = 4.
  12. y = 3x. Find y when x = 7.
  13. y = 16x. Find y when x = 7.
  14. y = 14x. Find y when x = 3.
  15. y = 18x. Find y when x = 5.
  16. y = 26x. Find y when x = 2.
  17. y = 29x. Find y when x = 5.
  18. y = 23x. Find y when x = 5.
  19. y = 10x. Find y when x = 25.
  20. y = 19x. Find y when x = 15.
More free practice: fieldbooklearning.com/uk/practice/year-8/write-and-use-y-kx-with-whole-number-k/

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Answer key: Write and use y = kx with whole number k

  1. 24
  2. 12
  3. 25
  4. 20
  5. 63
  6. 60
  7. 28
  8. 28
  9. 15
  10. 105
  11. 16
  12. 21
  13. 112
  14. 42
  15. 90
  16. 52
  17. 145
  18. 115
  19. 250
  20. 285