Cumulative Practice
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Pay close attention to the order of operations.
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We want to determine a equivalent number for the given expression. 3* 2^3 - 8 ÷ 4 To do so, we will evaluate it by following the order of operations. Let's do it!
| Operation | Before Simplification | After Simplification |
|---|---|---|
| Calculate power | 3* 2^3 - 8 ÷ 4 | 3* 8 - 8 ÷ 4 |
| Multiply | 3* 8 - 8 ÷ 4 | 24 - 8 ÷ 4 |
| Divide | 24 - 8 ÷ 4 | 24- 2 |
| Subtract terms | 24- 2 | 22 |
We can also evaluate this expression using a calculator. To do so, we type it as shown below.
Whenever using a calculator for a complicated expression such as this, be very careful when placing the parentheses. A calculator will only do what it is told to do, not what you meant for it do.