How to use a number line...

Friends of TEN (10)...2 Numbers that add to make ten (10).

Ten Frames...Arrange numbers  in boxes  (top to bottom).

Quick Ten Drawings...Represent numbers with lines (10's) and dots (1's).

Number Bonds...Grouping your addition and subtraction facts by part part whole.

Like Units...Tens (10, 20, 30, 40, 50, 60, 70, 80, 90) and Ones (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)...adding and subtracting...

Addition...

Subtraction...