Adding Integers Model

What sum does the set of tiles model? Yellow is positive

• (+3) + (+2) = +5

• (+3) + (+2) = -5

• (-3) + (-2) = -5

• (-3) + (-2) = +5

Tags

CCSS.7.NS.A.1C

What sum does the set of tiles model? Yellow is + and Red is -

• (+1) + (-4) = +3

• (+1) + (-4) = -3

• (-1) + (+4) = -3

• (-1) + (+4) = +3

Tags

CCSS.7.NS.A.1C

• 7
• 5
• -7
• -5

Tags

CCSS.7.NS.A.1B

27 + (-14)

• 13

• 15

• -13

• -15

Tags

CCSS.7.NS.A.1C

12 + 15 = 27 -12 + 15 = 3 12 + (-15) = -3 -12 + (-15) = -27

• 12 + 15 = 27

• -12 + 15 = 3

• 12 + (-15) = -3

• -12 + (-15) = -27

Tags

CCSS.7.NS.A.1B

(-13) + 8 =

• 4

• -5

• -4

• 5

Tags

CCSS.7.NS.A.1C

3 + (-63) =

• -60

• 60

• 66

• -66

Tags

CCSS.7.NS.A.1C

12 + 15 = 27

• 12 + 15 = 27

• -12 + 15 = 3

• 12 + (-15) = -3

• -12 + (-15) = -27

Tags

CCSS.7.NS.A.1B

(-20) + 41 =

• 21

• -21

• 51

• -51

Tags

CCSS.7.NS.A.1C

(-23) + 11 =

• -12

• 12

• -34

• 34

Tags

CCSS.7.NS.A.1C