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## Using Friendly Numbers: An Addition Strategy

WHAT IS A FRIENDLY NUMBER? In this case, we refer to friendly numbers as a number that is easy…

Compensation is a mental math strategy for multi-digit addition that involves adjusting one of the addends to make the equation…

## Breaking Up the Second Number: An Addition Strategy

Breaking up the second number is a mental math strategy for addition. Some students may find this method more efficient…

Left-to-right addition (also known as front-end addition or the partial sums method) is one of the most powerful mental math…

## Plus 7, 8, and 9: An Addition Strategy

Depending on the grade level that you teach, you will handle adding plus 7, 8, and 9 a bit different…

## Extending The Doubles and Near Doubles Facts: An Addition Strategy

The doubles facts are generally an introductory set of facts that we want our students to memorize. We can relate…

## Counting On: An Addition Strategy

Counting On is a beginning mental math strategy for addition. It is generally taught as an introductory mental math…

## Webinar: Teaching Basic Addition and Subtraction for Mastery

Sorry, this webinar is not currently available. For a full listing of all mini-courses that are available right now, please…