Free Educational Resources

+

Rating:
(0)
Author: Rebecca Davis
Description:

This lesson plan will focus on the mathematical properties of addition. Including: Commutative, Associative, Identity, and Inverse.

(more)

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

No credit card required

28 Sophia partners guarantee credit transfer.

281 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Commutative Property

When you are adding two numbers, it doesn't matter which order the numbers are in.

2 + 6 = 8

6 + 2 =8

Associative Property

When solving problems based on the rule from the Order of Operations (PEMDAS) that you have to solve what is in parentheses first.

However, when there is ONLY addition in the problem it doesn't matter where the parenthesis is located because the answer will be the same.

1 + (2 + 7) = 10

(1 + 2) + 7 = 10

(The Parentheses can "associate" with different numbers)

REMEMBER: This cannot be used with subtraction!

Identity Property

When you add 0 to any number it keeps the same identity.

6 + 0 = 6

0 + 6 = 6