Adding Decimals with 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

Does this model represent addition or subtraction?

Back

subtraction

Front

What is the answer to this model? Options:

0.19

,

0.61

,

0.42

,

0.2

Back

0.19

Front

Which problem is represented by this model? BE CAREFUL!
Options:

0.27 - 0.9

,

0.18 + 0.09

,

0.9 + 0.18

,

0.27 - 0.09

Back

0.27 - 0.09

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 decimal represents the amount shaded on the models? Options: 183, 1.83, 1.083, 0.83

Back

1.83

Front

What does the model represent? Options: 0.13, 0.31, 31, 3.1

Back

0.31

Front

Which of the decimals is equivalent to the value represented by the hundreds grid? Options: 0.37, 0.38, 0.83, 0.86

Back

0.86