Free math formula sheets for grades 6 to 8
Every formula and rule from each grade’s math on two printable pages, with a quick example for each and a free worksheet to practice it. No sign-up.
By the StudyWiz teamUpdated October 25, 2026How we write our pages
Grade 627 formulas and rulesRatios, percents, fractions, area, volume and mean, median and mode Grade 728 formulas and rulesPercent change, simple interest, integers, equations, circles and probability Grade 822 formulas and rulesExponent rules, slope, the Pythagorean theorem, volume and transformations
Grade 6What’s on each sheet
- The formulas and rules for every math topic in the grade, grouped the way schools teach them, following the Common Core standards.
- A short example with the numbers worked out under each one.
- Two pages, ready to print or save as a PDF. On screen, each formula links to a free worksheet with an answer key.
Ways to use them
- Homework: keep the sheet nearby, so your kid can look up a formula instead of asking for the answer.
- Test review: cover the examples and see which formulas your kid can explain.
- Starting a new grade: read the next grade’s sheet to see what’s coming.
More free practice
Every grade 6 to 8 math topic has a free printable worksheet with an answer key, and the free placement tests show which topics to practice first.
Keep reading
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