Addition involves finding the total of two or more numbers or amounts. There are different things you can use to help you add. You can use number lines, place value charts and place value counters.

Recognize numbers without counting and understand the place value of three-digit numbers. Ms. Knarr will teach the students of Teaching in Room 9 to recognize numbers without counting and understand ...

Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three-digit numbers together. When you do column addition, you lay out the numbers you are adding ...