# MPM1D Starting Order of Operations 2017-09-18

We took up yesterday’s stuff then worked on evaluating expressions using “order of operations” (which most of you call “BEDMAS”).

The big-picture idea is that there are rules about how we evaluate and simplify math expressions so that an expression isn’t ambiguous. For example, $1+2\times3$ is equal to $7$ because we agree that multiplication is resolved (evaluated) before addition.

We practised a bunch of different kinds. Your tiny slice of home is to evaluate this expression:

$(3+4)^2\div7\times2^2-4^3+(2\div7)$