Download presentation

Presentation is loading. Please wait.

Published byChad Greer Modified over 7 years ago

1
1.2 ADDING AND SUBTRACTING INTEGERS I can find the sums and differences of integers by using a number line or using SSA/DSS.

2
YOU CAN ADD OR SUBTRACT USING A NUMBER LINE 3+5

3
YOU CAN ADD OR SUBTRACT USING A NUMBER LINE 3+(-5)

4
YOU CAN ADD OR SUBTRACT USING A NUMBER LINE -3+5

5
YOU CAN ADD OR SUBTRACT USING A NUMBER LINE -3+(-5)

6
ABSOLUTE VALUE The distance between a number and 0 on the number line.

7
SAME SIGNS ADD (SSA) To add two numbers with the same sign, add their absolute value. The sum has the same sign as the addends. Examples: 3+4 -3 + (-4)

8
DIFFERENT SIGNS SUBTRACT (DSS) To add two numbers with different signs, subtract the absolute values. The sum has the same sign as the addend with the greater absolute value. Examples: -3 + 4 3 + (-4)

9
INVERSE PROPERTY OF ADDITION Two number the same distance from 0 on a number line are called opposites (ex: 3 and -3) A number and its opposite are called additive inverses The inverse property of addition says: For every real number a, there is an additive inverse –a such that a + (-a) = 0 Examples?

10
SUBTRACTING INTEGERS To subtract a real number, add the opposite a – b = a + (-b) 3 – 5 3 – (-5)

11
ASSIGNMENT ODDS ONLY Pg. 13 #7-25

Similar presentations

© 2023 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google