Adding Decimals Using Models

Front

Which problem is represented in the model? Options:

0.32 - 0.17

,

0.49 - 0.32

,

0.32 + 0.17

,

0.49 - 0.17

Back

0.32 + 0.17

Front

Which equation matches the model? Options: 0.73 - 0.23 = 0.50, 0.50 + 0.23 = 0.73, 0.73 + 0.23 = 0.50, 0.73 - 0.50 = 0.23

Back

0.50 + 0.23 = 0.73

Front

What equation matches this model? Options: 0.32 + 0.17 = 0.49, 0.32 - 0.17 = 0.49, 0.49 - 0.17 = 0.32, 0.49 + 0.17 = 0.32

Back

0.32 + 0.17 = 0.49

Front

What equation matches this model? Options: 0.7 - 0.44 = 1.14, 1.14 - 0.44 = 0.7, 1.14 + 0.7 = 0.44, 0.7 + 0.44 = 1.14

Back

0.7 + 0.44 = 1.14

Front

Which equation matches this model? Options: 0.2 + 0.3 = 0.5, 2 + 3 = 5, 0.02 + 0.03 = 0.05, blue + red = purple

Back

0.2 + 0.3 = 0.5

Front

Back

1.5

Front

Back

0.34 + 0.29 = 0.63

Front

Back

1.44

Front

0.4 and 0.297

Back

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Front

1.7 and 1.701

Back

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