SOLUTION: When a number line is used to add signed numbers, why is the endpoint of the first arrow at zero?

Algebra ->  Graphs -> SOLUTION: When a number line is used to add signed numbers, why is the endpoint of the first arrow at zero?      Log On


   

Question 80135This question is from textbook Gateways to Algebra and Geometry
: When a number line is used to add signed numbers, why is the endpoint of the first arrow at zero? This question is from textbook Gateways to Algebra and Geometry

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Because 3+5 is the same as 0+3+5
You start at 0; you move to 3
Then you start at 3 and move 5 to the right to come to 8.
===========
Cheers,
Stan H.