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McGraw Hill Glencoe Algebra 1, 2012

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McGraw Hill Glencoe Algebra 1, 2012 View details

Practice Test

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Exercise 4 Page 67

Pay close attention to the order of operations.

$13$

Practice makes perfect

According to the order of operations, powers are evaluated before multiplication and division, while addition and subtraction are evaluated last. For the given expression, this means evaluating the division and the power before adding the results, and finally subtracting.

32 \div 4 + 2^{3} - 3

Let's evaluate this expression.

Operation	Before Simplification	After Simplification
Calculate quotient	$32 \div 4 + 2^{3} - 3$	$8 + 2^{3} - 3$
Calculate power	$8 + 2^{3} - 3$	$8 + 8 - 3$
Add terms	$8 + 8 - 3$	$16 - 3$
Subtract term	$16 - 3$	$13$

The expression equals

13 .

Alternative Solution

Using a Calculator

We can also evaluate this expression using a calculator. To do so, type it as shown below.