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8th Grade Mixed Review Worksheets

This free printable worksheet practices a mix of equations, exponents, scientific notation, pythagorean theorem, square roots and cube roots, slope, word problems. It has 24 problems, and the answer key is on its own page when you print, so you can check work afterward.

Tip: Work one problem at a time and check each answer against the key at the end.

Name: ____________________Date: ____________

8th Grade Mixed Review

  1. Solve for x: 8x + 7 = 9x − 3
  2. Solve for x: −2x − 3 = 2x − 7
  3. Solve for x: −3x − 1 = 6x − 37
  4. Solve for x: 6x + 9 = 7x + 6
  5. Write as a single power: (60−2
  6. Write as a single power: (7−4)2
  7. 5−2 = ____
  8. 60 = ____
  9. Write 5.1 × 105 in standard form.
  10. Write 8,110 in scientific notation.
  11. Write 8.5 × 10−3 in standard form.
  12. Write 0.000735 in scientific notation.
  13. A right triangle has hypotenuse 29 and one leg 20. Find the other leg.
  14. A right triangle has hypotenuse 58 and one leg 40. Find the other leg.
  15. A right triangle has hypotenuse 34 and one leg 16. Find the other leg.
  16. A right triangle has legs 3 and 4. Find the hypotenuse.
  17. ∛8 = ____
  18. √121 = ____
  19. √196 = ____
  20. ∛512 = ____
  21. Find the slope of the line through (5, 4) and (2, −9).
  22. Find the slope of the line through (3, 9) and (−1, −3).
  23. Find the slope of the line through (1, 1) and (−6, −5).
  24. Find the slope of the line through (−8, 5) and (8, −4).

Answer Key: 8th Grade Mixed Review

  1. x = 10
  2. x = 1
  3. x = 4
  4. x = 3
  5. 60
  6. 7−8
  7. 1/25
  8. 1
  9. 510,000
  10. 8.11 × 103
  11. 0.0085
  12. 7.35 × 10−4
  13. 21
  14. 42
  15. 30
  16. 5
  17. 2
  18. 11
  19. 14
  20. 8
  21. 13/3 (4 1/3)
  22. 3
  23. 6/7
  24. −9/16

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More 8th grade worksheets: 8th Grade Equations · 8th Grade Exponents · 8th Grade Scientific Notation · 8th Grade Pythagorean Theorem · 8th Grade Square Roots and Cube Roots · 8th Grade Slope · 8th Grade Word Problems