2.3 Model adding decimals

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

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

Which equation matches this model?

• 0.2 + 0.3 = 0.5

• 2 + 3 = 5

• 0.02 + 0.03 = 0.05

• blue + red = purple

• 1 + 0.5 = 1.5

• 0.8 + 0.7 = 1.5

• 0.08 + 0.07 = 0.15

• Redurple

• 0.34 + 0.29 = 0.63

• 0.30 + 0.33 = 0.63

• 3.4 + 2.9 = 6.3

• Go Chargers

• 122 + 0.044 = 3,657

• 1 + 0.44 = 1.44

• 1.22 + 0.22 = 1.44

• Amurica

Which expression is modeled?

• 0.68 + 0.42

• 0.69 + 0.24

• 0.96 + 0.69

• 0.24 + 0.24

Which expression is modeled?

• 0.03 + 0.7

• 0.7 + 0.7

• 0.3 + 0.07

• 0.3 + 0.3