Math Methods

Here are some instructions that will hopefully clarify the three math methods that we have recently learned.  The three methods are partial sums addition, trade first subtraction, and counting up subtraction.  Here is a link with videos explaining all of these methods and more.

Math Methods Videos

I was asked the question in class today, "Why do we have to know how to do problems all of these different ways?"  The answer to that question is so that the students will have an assortment of strategies to help them be successful.  This can also help them check their work as they can work through a problem two different ways.  The strategies are pretty simple but take a little time to get the hang of.  Be patient and it will all make sense someday soon.

Partial Sums Addition

Trade First Subtraction


Counting-Up Subtraction