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McGraw Hill Glencoe Algebra 1, 2012

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McGraw Hill Glencoe Algebra 1, 2012 View details

2. Order of Operations

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Exercise 19 Page 13

Pay close attention to the order of operations.

14

Practice makes perfect

According to the order of operations, expressions are evaluated in the following order: parentheses, exponents, multiplication and division, then addition and subtraction.

18÷9+2*6 For the given expression, this means dividing and multiplying completely before adding their products.

Operation	Before Simplification	After Simplification
Calculate quotient	18÷9+2*6	2+2*6
Multiply	2+ 2*6	2+ 12
Add terms	2+12	14

The expression equals 14.

Alternative Solution

Using a Calculator

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

Subchapter links

Check Your Understanding p.12

Practice and Problem Solving p.13-14

H.O.T. Problems p.14

Standardized Test Practice p.15

Spiral Review p.15

Skills Review p.15