Adding integers  Adding and Subtracting Integers
Adding integers
In this section, we will use our knowledge from previous section to build our understanding of integer addition. We will be asked to write addition statements using arrows on number lines. A thermometer is just like a number line. In this section, the blue arrows on the number lines will move to the left, or down the number line, and represent negative integers. A negative integer on a thermometer would represent a cooler temperature. In this section, the red arrows will move to the right, or up the number line, and represent positive integers. A positive integer on a thermometer would represent a warmer temperature.
Lessons

1.
What addition statement does each of the following diagrams represent? Then, find the sum.

d)

2.
Use a number line to add.