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Big Ideas Math: Modeling Real Life, Grade 6

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Big Ideas Math: Modeling Real Life, Grade 6 View details

2. Order of Operations

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Exercise 1 Page 10

Pay close attention to the order of operations.

38

Practice makes perfect

According to the order of operations, expressions inside parentheses are evaluated first, followed by exponents, then multiplication and division, and finally addition and subtraction are evaluated last.

7 * 5 +3 For the given expression, this means evaluating the multiplication first, then the addition. Let's simplify the expression.

Operation	Before Simplification	After Simplification
Multiply	7 * 5+3	35+3
Add terms	35+3	38

The expression is equal to 38.

Alternative Solution

Using a Calculator

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

Subchapter links

Try It p.10-11

Self-Assessment for Concepts & Skills p.11

Self-Assessment for Problem Solving p.12

Review & Refresh p.13

Concepts, Skills, & Problem Solving p.13-14