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Marcos added +12 + -11 and got the answer -1. What error did Marcos make? He found the difference of the numbers instead of the sum. He divided the integers. He chose the incorrect sign for the sum. He
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Marcos added +12 + -11 and got the answer -1. What error did Marcos make?

He found the difference of the numbers instead of the sum.

He divided the integers.

He chose the incorrect sign for the sum.

He multiplied the integers.

User Junni Lomo
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He chose the incorrect sign for the sum. 
User Arin
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