CPM Homework Help : CC1MN Problem 3-106

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3-106.

Find the missing value in each number sentence.

$4 - 3.5 + 3.5 - 1 = \text {_____}$

Hint (a):
Since $−3.5 + 3.5 = 0$ , this number sentence can be written equivalently as $4 − 1$ .

$- 2 + 4 + 4 = \text{_____}$

Hint (b):
Try using integer tiles.
More Help (b):
$-- \qquad ++++ \qquad ++++$

$5 \frac { 1 } { 3 } - 7 - 5 \frac { 1 } { 3 } = \text{_____}$

Hint (c):
Like in part (a), there are two terms which sum to 0 in this number sentence.
Answer (c):
$−7$

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