Subtract within 1000 using various representations, strategies, and algorithms. Warm up with a Mystery Math Mistake to find a mistake made in using an algorithm for addition and subtraction. Subtract ...

Learn about efficient addition and subtraction methods. Add numbers with up to 4 digits together Learn how to add numbers with up to 4 digits together. Subtract up to 4-digit numbers Learn how to ...

Making Addition Easy and Fun: Maths doesn’t have to be boring or difficult. When getting to know the subject, the students need to learn the initial things first. Addition is one of them. Instead of ...

Watch the video to learn about adding and subtracting with negative numbers on a number line and by using number discs. Adding and subtracting with negative numbers. Let's talk about two ways to help ...

Your child continues to use tape diagrams as a visual tool to solve word problems. Your child continues to use tape diagrams as a visual tool to solve word problems. Now, he solves for an unknown in ...