Adding Using Models

Which equation matches this model?

• 0.2 + 0.3 = 0.5

• 2 + 3 = 5

• 0.02 + 0.03 = 0.05

• blue + red = purple

Which problem is represented in the model?

• 0.32 - 0.17

• 0.49 - 0.32

• 0.32 + 0.17

• 0.49 - 0.17

Which equation matches the model?

• 0.73 - 0.23 = 0.50

• 0.50 + 0.23 = 0.73

• 0.73 + 0.23 = 0.50

• 0.73 - 0.50 = 0.23

What equation matches this model?

• 0.32 + 0.17 = 0.49

• 0.32 - 0.17 = 0.49

• 0.49 - 0.17 = 0.32

• 0.49 + 0.17 = 0.32

Yellow is positive and red is negative. The model represents which expression?

• - 6 + (-6)

• -6 + 6

• 6 + 6

• -5 + 6

Yellow is positive and red is negative. Solve the model.

• 0

• -12

• 12

• 1

What equation is true based on the model?

• (-3) + 5 = -2

• (-3) + 5 = 2

• 3 + (-5) = 2

• A
• B
• C
• D

Which equation represents the 2-color counters shown in the image? (Yellow is Positive and Red is Negative)

• -4 + 5 = -1

• 4 + 5 = 9

• 4 + (-5)= -1

• -5 - 4 = -9

What equation matches this model?

• 0.7 - 0.44 = 1.14 

• 1.14 - 0.44 = 0.7

• 1.14 + 0.7 = 0.44

• 0.7 + 0.44 = 1.14