(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 ...

(playful music) (electronic bells ringing) - [Children] Math Mights! - Welcome back 1st grade Math Mights. I'm Mrs. Markovich and I'm here to do so many fun things in math with you today. Let's start ...

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 ...