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McGraw Hill Glencoe Algebra 1, 2012

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McGraw Hill Glencoe Algebra 1, 2012 View details

3. Properties of Numbers

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Exercise 10 Page 19

What needs to be evaluated first, according to the order of operations?

The expression simplifies to $7 .$

Step	Action	Property used
1	Calculate power	Substitution
2	Subtract term	Additive Inverse
3	Add terms	Additive Identity

Practice makes perfect

According to the order of operations, expressions found inside parentheses are calculated first.

7 + (9 - 3^{2})

Calculate power

7 + (9 - 9)

Subtract term

7 + 0

Add terms

7

The expression simplifies to

7 .

Let's name the property used in each step.

Step	Action	Property used
1	Calculate power	Substitution
2	Subtract term	Additive Inverse
3	Add terms	Additive Identity

Subchapter links

Check Your Understanding p.19

Practice and Problem Solving p.19-21

H.O.T. Problems p.21

Standardized Test Practice p.22

Spiral Review p.22

Skills Review p.22