What is the difference of 8 and 9 written as an addition problem?
A. 8 + (−9)
B. 8 − (−9)
C. 9 + 8
D. 9 + (−8)
Since you are looking for a DIFFERENCE 9 has to be subtraced from 8....and since you want it in the form of an addition problem, 8 + (-9) would fit the bill, A (though poorly worded problems are somewhat ambiguous.....some may say that D would also work)