Multiplication and division law for integer base and negative powers

Interactive practice questions

Evaluate the following expression: $4^7\times4^{-5}$47×45.

Easy
Less than a minute
Evaluate the following expression: $8^{-10}\times8^{13}$810×813.
Evaluate the following expression: $5^2\times5^{-4}$52×54.
Simplify the following, giving your answer with a positive index: $2^3\div2^{-2}$23÷​22