Answer
$80$
Work Step by Step
We start with the given expression: $55.3+0.2+23.8+0.7$
The commutative property of addition states that changing the order of the addends does not affect the sum.
We use the commutative property to rearrange the addends: $55.3+0.7+23.8+0.2$
The associative property of addition states that changing the grouping of the addends does not affect the sum.
We use the associative property to group the addends: $(55.3+0.7)+(23.8+0.2)$
We use the order of operations to simplify the expression: $56+24$
We add: $80$
