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Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

1. Parallel Lines and Transversals

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Exercise 3 Page 108

Pay close attention to the order of operations.

13

Practice makes perfect

According to the order of operations, exponents are evaluated before addition and subtraction. For the given expression, this means evaluating the exponent before addition.

Operation	Before Simplification	After Simplification
Calculate power	4+3^2	4+ 9
Add terms	4+ 9	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.

Subchapter links

Try It p.104-106

Self-Assessment for Concepts & Skills p.106

Self-Assessment for Problem Solving p.107

Review & Refresh p.108

Concepts, Skills, & Problem Solving p.108-110