Question

Allen is showing his work in simplifying –8.3 + 9.2 – 4.4 + 3.7. Identify and explain any errors in his work or in his reasoning. Write feedback to Allen explaining the mistake he made and how to correct his work.


Step Work Reasoning
0 −8.3 + 9.2 − 4.4 + 3.7 Original problem
1 −8.3 + 9.2 + 4.4 + 3.7 Additive inverse
2 −8.3 + 4.4 + 9.2 + 3.7 Commutative property
3 −8.3 + (4.4 + 9.2 + 3.7) Associative property
4 −8.3 + 17.3 Simplify
5 9 Simplify

Answer 1

@GuitarNerd2015

Answer 2

Hmm... I dont think that Allen should have moved the numbers around and or grouped them. He should have just used his order of operations to just solve it. And if he used it correctly he should have just solved the problem from left to right!

Answer 3

make sense?

Answer 4

yesh

Answer 5

cool!