(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 ...

In this video, I explain how to perform two-digit operations quickly using mental strategies. We'll cover **addition**, ...

When you are adding larger numbers, it’s often better to use a written method. Column addition is a good written method to add one number to another. It involves putting the digits of each number into ...

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, ...