Adding and Subtracting Decimals with Models

Which problem is represented in the model?

• 0.32 + 0.17

• 0.32 - 0.17

• 0.49 - 0.32

• 0.49 - 0.17

Which problem is represented in the model?

• 0.50 + 0.23 = 0.73

• 0.73 - 0.50 = 0.23

• 0.73 + 0.23 = 0.50

• 0.73 - 0.23 = 0.50

Which problem is represented in the model?

• 0.32 - 0.17 = 0.49

• 0.49 - 0.17 = 0.32

• 0.32 + 0.17 = 0.49

• 0.73 - 0.23 = 0.50

Which problem is represented in the model?

• 1.14 + 0.7 = 0.44

• 0.7 - 0.44 = 1.14

• 1.14 - 0.44 = 0.7

• 0.7 + 0.44 = 1.14

Does this model represent addition or subtraction?

• addition

• subtraction

What is the answer to this model?

• 0.42

• 0.19

• 0.61

• 0.2

Which problem is represented by this model?

BE CAREFUL!

• 0.27 - 0.9

• 0.9 + 0.18

• 0.18 + 0.09

• 0.27 - 0.09

Which decimal represents the amount shaded on the models?

• 183

• 1.83

• 0.83

• 1.083

Which decimal represents the amount shaded on the models?

• 183

• 0.83

• 86

• 0.86

Which decimal represents the amount shaded on the models?

• 0.9

• 0.009

• 0.9

• 0.99