Question

5-(40/5)

Step A: 5+ (4)
Step B: 5+8
Step C: 13
In which step did the student first make an error? Be sure to include the correct value of
the expression in simplest form in your answer.
Explain your answer.

Answer 1

5 -
`(40)/(5)` = 5 - 8 = -3

Explanation:

The first mistake made by the student is in Step A where the problem was not copied down correctly.