According to the order of operations expressions inside parentheses are evaluated first, while addition and subtraction are evaluated last.
18* 2 - 4^2÷ 8
For the given expression exponents should be calculated first, followed by multiplications and divisions, then finally subtraction.
Operation
Before Simplification
After Simplification
Calculate power
18* 2-4^2÷ 8
18* 2 - 16÷ 8
Multiply
18* 2-16÷ 8
36-16÷ 8
Calculate quotient
36- 16 ÷ 8
36- 2
Subtract term
36- 2
34
The expression equals 34.
Alternative Solution
Using a Calculator
We can also evaluate this expression using a calculator. To do so, type it as shown below.
