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Published bySheila Mary Harrell Modified over 6 years ago
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Adding Integers Welcome to the world of integers!
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1 -1 Let’s review Think of each Yellow Chip as positive 1
Think of each Red Chip as negative 1 1 -1
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Now it’s your turn. 1.) Which color chip represents NEGATIVE one?
a.) b.)
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Think of each yellow Chip as positive 1
= 3 1 1
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Great Job! Next Question
2.) How much is represented in the picture? a.) 6 b.) c.) -5 d.)
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= + 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) + =
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Adding with Color Counters
Think of each Green Chip as positive 1 Think of each Red Chip as negative 1 1 -1
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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.”
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+ = + = -5 3 -2
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Represent the following problem on your mat, then solve
-4 + 2 = + =
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+ = -4 -2 + 2 = , Each red cancels out a yellow. (Zero Pairs)
Only two yellow are left + = -4 -2 + 2 =
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Your Turn With a partner, try to solve the given problems using the integer mat.
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