Solve: 81÷9÷3+18+27-10 Using Order of Operations

Question

Solve the following problem using the order of operations:

$81:9:3+18+27-10=\text{?}$

00:13 Let's solve this math expression together.

00:17 Remember, always do multiplication and division first, before you add or subtract.

00:23 Start with the division part on its own, and then continue with the rest.

00:36 Work through each step, adding everything up at the end.

00:41 And there you have it, that's the solution!

According to the order of operations rules, we'll place the division exercises in parentheses:

$(81:9:3)+18+27-10=$

Let's solve the expression in parentheses from left to right:

$81:9=9$

$9:3=3$

We should obtain the following expression:

$3+18+27-10=$

Let's solve the expression from left to right:

$3+18=21$

$21+27=48$

$48-10=38$