1. Adding Integers
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2. INTRODUCTION TO INTEGERS
We can represent integers using red and yellow counters.
Red circles will represent negative integers, and yellow circles will represent positive integers.
Negative integer
Positive integer
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3. Zero Pair
If we add one red and one yellow together what do they equal?
0!!! So we call them a zero pair. = +
Positive integer
Negative integer
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4. INTRODUCTION TO INTEGERS
The diagrams below show 2 ways to represent -3.
Represent -3 in 2 more ways. -3 -3
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5. INTRODUCTION TO INTEGERS
Tell which integer each group of tiles represents. +1 -2 +2
ANSWER
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6. INTRODUCTION TO INTEGERS
If there are the same number of red tiles as yellow tiles, what number is represented?
It represents 0. It has 3 zero pairs!
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7. ADDING INTEGERS We can model integer addition with color counters.
Represent -2 with the fewest number of counters.
Represent +5 with the fewest number of color counters.
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8. ADDING INTEGERS
What number is represented by combining the 2 groups of tiles?
Write the number sentence that is illustrated.
= +3 +3
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9. = -5 + ADDING INTEGERS Use your red and yellow tiles to find each sum.
= ?
ANSWER
= -5 +
= -5
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10. + - 4 = +1 = + ADDING INTEGERS -6 + +2 = ? -3 + +4 = ? -6 + +2 = -4
= ?
ANSWER + =
- 4
= -4
= ?
ANSWER = +1 +
= +1
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