Use properties of rational numbers to simplify the expression.

Question

55 + 16.28 + 31.92
A.
103.2
B.
104.3
C.
102.19
D.
102.2

Answer 1

To simplify the expression \( 55 + 16.28 + 31.92 \):

1. Start by adding \( 55 + 16.28 \): \[ 55 + 16.28 = 71.28 \]

2. Next, add \( 71.28 + 31.92 \): \[ 71.28 + 31.92 = 103.2 \]

Thus, the simplified expression yields:

\[ \boxed{103.2} \]

So the correct answer is A. 103.2.