Basic Subtraction: with Annie & Moby

概要

An operation is a way to solve a math problem, such as addition and subtraction. In this movie, you’ll learn how to subtract, or take away, using different strategies. You can count back to find the difference or use fact families and related facts to subtract. You can also use a fact triangle, a number line, or draw pictures to help you subtract. You'll watch as Annie writes and solves subtraction sentences using numbers, the minus sign, and the equal sign. What is 10 – 2?