Formula Definition: a plain-English explanation of what the term means, why it matters in math, and how it is used, followed by worked examples and practice questions so the definition turns into something you can apply.
Math Dictionary / Formula
Formula
A formula is a rule written with symbols that shows how quantities are related. The area formula for a rectangle, A equals length times width, holds for every rectangle, which is what makes a formula more useful than any single calculation.
Problem SolvingGrade 5Grade 6Grade 7Grade 8Algebra 1GEDSATACT
What it means
Formulas help solve problems the same way each time.
Also called: rule
Examples
| A = lw |
| d = rt |
| C = 2pi r |
Common mistake
Substitute values carefully and keep units consistent.
Try one
Question: Which formula finds the area of a rectangle?
Show answer
A = length x width.