body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

McGraw Hill Glencoe Algebra 1, 2012

MH

McGraw Hill Glencoe Algebra 1, 2012 View details

2. Order of Operations

Continue to next subchapter

Exercise 20 Page 13

Pay close attention to the order of operations.

42

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.

10+8^3÷16 For the given expression, this means evaluating the exponent first, then dividing, and finally adding.

Operation	Before Simplification	After Simplification
Calculate power	10+8 ^3÷16	10+ 512÷16
Calculate quotient	10+ 512÷16	10+ 32
Add terms	10+32	42

The expression equals 42.

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