Ryan was adding numbers on a number line. He started at –3 and then he added +2. He wrote that his answer was –5 .
Is Ryan's answer reasonable?
A.
No, it is not reasonable because if you start at –3, you will move 2 spaces to the right and get –1.
B.
No, it is not reasonable because if you add two integers, you get a positive integer. The answer is +5.
C.
Yes, it is reasonable because if you start at –3, you will move 2 spaces to the left and get –5.