Adding negative and positive numbers

(1) What is an integer?


(2) Adding Integers


(3) Adding Integers with a number line


(4) Adding Integers, animated number line


(5) Adding Integers - use the sign of the larger absolute number; adding 3 numbers.


(6) Adding Integers (with dogs & cats)


(7) Adding and Subtracting negative and positive integers - Rules
When he says bigger number, he means the bigger absolute number.