Adding Integers using number chips

WELCOME TO … Ms. Herzog’s Integers Lesson!

What is an integer??? Any whole number. It can be positive or negative. ANSWER Adding Integers! Examples: 2, -5, 245, 0, 9, -1,399

How do we add positive and negative integers? Think in terms of number chips Example: We can think of 4 as four positive chips +4

How do we add positive and negative integers? Think in terms of number chips Another example: We can think of -3 as three negative chips -3

How do we add positive and negative integers? Think in terms of number chips Another example: We can think of -8 as eight negative chips -8

How do we add positive and negative integers? Think in terms of number chips Another example: We can think of 6 as six positive chips +6

Let’s do an example! Use number chips! 4 + 7 ANSWER 11 +4 +7

Let’s do an example! Use number chips! -2 + 5 ANSWER 3 One negative chip and one positive chip cancel! +5 -2

Let’s do an example! Use number chips! 3 + (-5) ANSWER -2 One negative chip and one positive chip cancel! +3 -5

Let’s do an example! Use number chips! -8 + 5 ANSWER -3 One negative chip and one positive chip cancel! -8 +5

Let’s do an example! Use number chips! -3 + (-5) ANSWER -8 There are no chips to cancel! -5 -3

-3 + (-8) -11 ANSWER Number Chips! -3 -8

4 + (-5) -1 ANSWER Number Chips! +4 -5

-3 + 9 6 ANSWER Number Chips! -3 +9

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