Answer
$45$
Work Step by Step
Use the order of operations to simplify the expression:$$8^{2}-16\div2^{2}\times4-3$$ As there are no grouping symbols, start with exponents$$64-16\div4\times4-3$$ Next complete all multiplication and division in the order it appears left to right$$64-4\times4-3$$ $$64-16-3$$ Finally complete all addition and subtraction in the order it appears left to right$$48-3$$ $$45$$