Question

Aiden wanted to model -15 + 15 = 0 on the number line. He first drew an arrow 15 units long starting from zero that pointed to the left. He then draws another arrow 15 units long starting from zero that points to the right. What error did Aiden make?

Answer 1

The first arrow was correct starting at zero moving 15 units to the left representing -15.

The second arrow should start at -15 and got to the right 15 Units ending at 0 which represents +15.

-15+15 = 0

Answer 2

He should've drawn the arrow starting from -15 pointing right to show how adding these two numbers would equal zero... hope this helped

Explanation: