Integer addition with counters

What is a zero pair?

• 2 negatives

• 2 positives

• 1 negative & 1 positive

• None of these represent a zero pair.

What number does this represent?

• 6

• -6

• 2

• -2

Tags

CCSS.7.NS.A.1B

How many Zero Pairs are in the model?

• 8

• 4

• -1

• 9

How many Zero Pairs are in the model?

• 6

• 4

• -2

• 2

What is the sum?

• -5

• 1

• -1

• 4

What is the sum?

• -2

• -4

• 6

• 2

Which equation represents the 2-color counters shown in the image?

Yellow is Positive and Red is Negative

• 4 + 1 = 5

• 4 + (-1) = 5

• 4 + (-1) = 3

• -4 + 1 = -3

In class we modeled integer addition problems with counters.

Yellow is Positive and Red is Negative

• 4 + (-3) = 1

• -4 + (-3) = -7

• -4 + 3 = -1

• 4 + 3 = 7