Subtracting Decimals with Grid Models

Which problem is represented by this model? BE CAREFUL!

• 0.27 - 0.9

• 0.18 + 0.09

• 0.9 + 0.18

• 0.27 - 0.09

Does this model represent addition or subtraction?

• addition

• subtraction

The model demonstrates a subtraction expression.

Which expression does the model demonstrate?

• 1.0 - 0.52

• 0.52 - 1.0

• 1.0 - 52.0

• 100 - 0.52

Which of the following expressions matches the grid shown?

• 0.57 + 0.33 = 0.90

• 0.33 - 0.24 = 0.09

• 0.57 - 0.33 = 0.24

• 0.43 - 0.33 = 0.24

What is the answer to this model?

• 0.19

• 0.61

• 0.42

• 0.2

Subtracting Decimals: Use the grid method to subtract 0.3 from 0.7

• 0.6

• 0.5

• 0.4

• 0.8

Subtracting Decimals: Use the grid method to subtract 0.5 from 0.9

• 0.3

• 0.7

• 1.2

• 0.4

Does this model represent addition or subtraction?

• addition

• subtraction