Mathematics, 07.12.2021 18:10, mlyons574
Allen is showing his work in simplifying β8.3 + 9.2 β 4.4 + 3.7. Identify any errors in his work or in his reasoning.
Step Work Reasoning
β8.3 + 9.2 β 4.4 + 3.7 Original problem
1 β8.3 + 9.2 + 4.4 + 3.7 Additive inverse
2 β8.3 + 4.4 + 9.2 + 3.7 Commutative property
3 β8.3 + (4.4 + 9.2 + 3.7) Associative property
4 β8.3 + 17.3 Simplify
5 9 Simplify
He did not make any errors.
Step 1: He wrote β4.4 incorrectly as + 4.4.
Step 2: He identified changing the order of the numbers as the commutative property, which is incorrect.
Step 3: He identified changing the grouping of the numbers as the associative property, which is incorrect.
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