Solve the following:

by laws of exponents , we know that , a^m÷ aⁿ = a^(m-n)

So , ÷ = = = =

∴ ÷ =

100^–10

Solve the following:

2^–2 × 2^–3

Express 3^–5 × 3^–4 as a power of 3 with positive exponent.

Express 16^–2 as a power with the base 2.