8th Grade · Expressions & Equations
Like Base
8.EE.A.1
Definition
The same base appearing in two or more powers. Exponent rules such as adding or subtracting exponents only apply when the bases are identical.
Examples
- 53 · 52 = 55 works because the bases match.
- 23 · 54 stays as it is — different bases don't combine.
Key rule
Exponent rules only work when the bases match.
Memory hook
Same base — then the exponent rules apply.