Matt is showing his work in simplifying (6.2 − 1.6) − 4.4 + 7.8.
Identify any error in his work or reasoning.
Simplified work of Matt = (6.2 − 1.6) − 4.4 + 7.8.
The error is that he didn't put all decimals inside the parenthesis.
=> (6.2 − 1.6 − 4.4) + 7.8 = though what he did is acceptable.