Question

A student evaluated -4 + (-9 1/2) and got an answer of 5 1/2. What might the student have done wrong?​

Answer 1

Answer:

Step-by-step explanation:

- 4 + ( - $9\frac{1}{2}$ ) = - 4 - $9\frac{1}{2}$ = - (4 + 9 + $\frac{1}{2}$ ) = - 13$\frac{1}{2}$

The student, definitely, subtracted the numbers.

- 4 - ( - $9\frac{1}{2}$ ) = - 4 + $9\frac{1}{2}$ = 9 - 4 + $\frac{1}{2}$ = 5$\frac{1}{2}$