Greg was adding numbers on a number line. He started on - 5 and then he added - 8. Greg wrote that the answer was + 13.
Is Greg's answer reasonable?
A.
No, it is not reasonable because - 5 + - 8 = - 13.
B.
Yes, it is reasonable because - 5 + - 8 = + 13.
C.
No, it is not reasonable because if you add two numbers you will get a number that is greater than either of the two numbers.
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