100
Caro evaluated 5.6 + (19.4 +c) - 0.8, when c = 6.8. She used the steps below to evaluate the expression.
step 1 = 5.6 + (19.4 + 6.8 ) - 0.8
step 2 = (5.6 + 19.4) + 6.8 - 0.8
step 3 = 25 + 6
step 4 = 31
Which property did Caro use to get from step 1 to step 2?
What is associative property