1) explain to someone how you would do the problem -12 + 5. explain to them how they would know if the final answer was going to be positive or negative. explain to them how they’d calculate the final answer. model for them using the number line model and/or the two colored counter method.

2) a football team gained 7 yards, lost 3 yards, gained 15 yards, lost 2 yards, lost 3 yards
and gained 6 yards. what is the net gain or loss? explain how you found your answer.
answer the question in a complete sentence.