1.3 and 1.4 Watch Your Signs!

You will learn about: Adding 2 positive numbers together 4 + 3 Adding 2 negative numbers together -4 - 3 Double negative-what do you do? 4 - - 3 Plus and a minus together-what do you do? 3 - 4

Part 1 Two Positive Numbers

Always gives you a Bigger Two Positive Numbers Always gives you a Bigger Positive Number

11 + 6 = 17 Easy!

1 2 3 + = - +

+ Means Move to Right

Part 2 Two Negative Numbers

Add them together and keep the minus sign -5 – 2 =? -7 Add them together and keep the minus sign

Add them together and keep the minus sign -4 – 1 =? -5 Add them together and keep the minus sign

Add them together and keep the minus sign -300 – 20 =? -320 Add them together and keep the minus sign

- Means Move to Left

-7 - 2 = -9 -9 -8 -7 The Dark Side

Negative: Move Toward The Dark Side

A Positive & A Negative Number Part 3 A Positive & A Negative Number

Subtract the smaller from the larger 7 - 2 = ? Subtract the smaller from the larger The larger sign wins! 7 - 2 = 5

Subtract the smaller from the larger 2 – 7 = ? Subtract the smaller from the larger 7 - 2 = 5 The larger sign (-7) wins! 2 - 7= -5

Subtract the smaller from the larger 3 – 15 = ? Subtract the smaller from the larger 15 - 3 = 12 The larger sign wins! 3 - 15 = -12

Double Minus Alert!!!!

Two minus signs together: Double minus (- -) Equals a Plus ( + )

Double Minus Alert! 6 - -3 = 6 + 3 = 9

Double Minus Alert! -4 - -5 = -4 + 5 = 1

Two signs together: Minus and Plus (- +) The minus always wins!

Minus kicks butt

6 + -2 = ? 6 – 2 = 4

-3 + -5 = ? -3 – 5 = -8

Got It? - 5 + 2 = ? - 3

Got It? -30 – 4 = ? -34

Got It? 2 - -4 = ? 6

Which are Integers? 4, 2.1, -5 4, -5

Trick Question -12 - -14 = ? 2

Got It? Find |-3| |-3| = 3

Got It? 12 + -1 = ? 11

Got It? - 8 < or > 2 ? - 8 < 2

Now, try some problems on your own.