Adding Integers Welcome to the world of integers!

1 -1 Let’s review Think of each Yellow Chip as positive 1 Think of each Red Chip as negative 1 1 -1

Now it’s your turn. 1.) Which color chip represents NEGATIVE one? a.) b.)

Think of each yellow Chip as positive 1 = 3 1 1

Great Job! Next Question 2.) How much is represented in the picture? a.) 6 b.) 5 c.) -5 d.) -3

= + Nothin’ Each red chip cancels out a yellow chip Think of it like money. A yellow chip is money you earn (like allowance) and a red chip is money you spend (on Doritos) Nothin’ (You spent all your money on Doritos) + =

Adding with Color Counters Think of each Green Chip as positive 1 Think of each Red Chip as negative 1 1 -1

Consider the following problem: “I owe my mother $5, but I earned $3 today, do I still owe my mother any money? Use your chips to determine the answer. Also write an equation to represent the situation.”

+ = + = -5 3 -2

Represent the following problem on your mat, then solve -4 + 2 = + =

+ = -4 -2 + 2 = , Each red cancels out a yellow. (Zero Pairs) Only two yellow are left + = -4 -2 + 2 =

Your Turn With a partner, try to solve the given problems using the integer mat.