Addition of Integers Using Chips

What would you need to add to this counter to be true? -7 + _____ = 2

• 5 negative chips

• 9 negative chips

• 11 positive chips

• 9 positive chips

Which number sentence represents this model?

• 5 + (-8) = 3

• -8 + 5 = -3

• -8 - 5 = -13

• 8 - 5 = 3

Which addition problem does NOT require zero pairs to solve using chips?

• 8+(-3)

• (-1)+4

• 3+6

• (-9)+(-5)

What addition problem is modeled?

• 7+(-6)

• 7+6

• 7-(-6)

• (-7)+6

Using counting chips, what is the value of: 10 + 5 = ____.

Hint: Red are negative and yellow are positive)

• 
• 
• 
• 

-2 + 4 =

• -2

• 2

• 0

• -4

What sum does the set of tiles model?

• 3 + 2 = 5

• 3 + (+2) = -5

• (-3) + (-2) = -5

• (-3) + (-2) = 5

14 - +5

• 9

• 10

• -9

• -10

-12 - +5

• 7

• 5

• -7

• -5

What sum does the set of tiles model?

(hint: yellow squares are positive and red are negative)

• (-4) + (-2) = +6

• (+4) + (+2) = -6

• (+4) + (-2) = -6

• (-4) + (-2) = -6