When you are solving an addition calculation with a two-digit number, you need to think about tens and ones. A place value chart can help you to see the value of each digit in a number. For example, ...

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 ...

(happy music) (springing) (creaking) (squeaking) - [Kids] Math Mights! - Welcome first grade Math Mights. I'm Mrs. Markavich, and I'm so excited that you're here with me today. Let's take a look at ...