Integer Subtraction with Models

• 4 + 2 = 6
• -4 + 2 = -2
• 4 + (-2) = 2
• -4 + (-2) = -6

Tags

CCSS.7.NS.A.1C

• 7 + 10 = 3
• -7 + 10 = 3
• -7 - 10 = 3
• -7 + 3 = 10

Tags

CCSS.7.NS.A.1D

• 9 + 4 = 13
• 9 + (-4) = 5
• -9 + 4 = -5
• -9 + (-4) = -13

Tags

CCSS.7.NS.A.1B

12 + 15 = 27

• 12 + 15 = 27

• -12 + 15 = 3

• 12 + (-15) = -3

• -12 + (-15) = -27

Tags

CCSS.7.NS.A.1C

-5 - 4 = -1

-5 + 1 = -1

-5 + 4 = -1

5 + (-4) = 1

• -5 - 4 = -1

• -5 + 1 = -1

• -5 + 4 = -1

• 5 + (-4) = 1

Tags

CCSS.7.NS.A.1B

The number line model represents which expression?

• -7 − 10

• -7 − 3

• -7 − (-10)

• 7 − (-3)

Tags

CCSS.7.NS.A.1B

What is the answer that the counters are modeling?

• 5

• 3

• 0

• -2

Tags

CCSS.7.NS.A.1B

The only rule for subtracting integers is add the _____________.

• opposite

• reciprocal

• negative

• positive

Tags

CCSS.7.NS.A.1C

• -15 - 5 = -10
• -15 - 5 = -20
• 15 - 5 = 20
• -15 - (-5) = -20

Tags

CCSS.7.NS.A.1B

Choose the equation that best represents the model.

• 2 + (–6) =  –4

• 0 – 6 = –6

• –6 + 8 = 2

• 8 + (–6) = 2

Tags

CCSS.7.NS.A.1B