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McGraw Hill Glencoe Algebra 1, 2012

MH

McGraw Hill Glencoe Algebra 1, 2012 View details

3. Properties of Numbers

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Exercise 18 Page 20

Which two numbers are easiest to add?

The expression simplifies to $36 .$

Step	Action	Property used
1	Commutative Property of Addition	Commutative (+)
2	Add parentheses	Associative (+)
3	Add terms	Substitution
4	Add terms	Substitution

Practice makes perfect

Some numbers are easier to add than others. For example, the numbers

13

and

7

are relatively easy to add because

3

and

7

add to

10 .

Let's try rearranging our terms to see what will be easiest.

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