Take Apart Addend To Solve

Breaking apart an addend is a mental math strategy for addition. Some students may find this method more efficient than left-to-right addition.

This strategy involves breaking upward one addend in an equation into more than manageable parts. Like many other mental math strategies, this strategy encourages students to recall flexibly and to manipulate numbers in different ways. This is the big goal of mental math!

As you look at the examples given, you'll notice that this strategy reinforces place value understanding, every bit students are breaking apart the addend past place value.

EXAMPLES

Allow's take a look at how to perform this strategy. Whenever you introduce a new strategy in your classroom, be sure to use small-scale, easy to work with numbers. This will ensure that students can focus on the strategy itself rather than struggling with big numbers while trying to master a new strategy.

In this instance, we will add 14+12. We will break the 12 into a 10 and a 2.

Now we add. First we add xiv+10 to brand 24, then add the remaining 2 to brand 26.

Let'south try another example. Here we will solve 35+46. Showtime we break the 46 into a xl and a 6.

We will add 35+40 to make 75, then add the remaining vi to make 81.

FLEXIBLE THINKING

One of the greatest aspects of mental math is that there is not a series of steps to memorize. Really we but want our students to understand what the numbers mean and be able to manipulate them in a way that works for each private student.

Suppose nosotros accept the equation 213+214.

One student might choose to break up the 2nd number and add 213+200+10+four.

Some other educatee might choose to suspension up the 2nd number into only two parts and add 200+210+4.

A third educatee might cull to add together these numbers using left to right addition.

Hither'southward a video with more information on how you tin can teach the interruption apart strategy using the Concrete Representational Abstruse model:

This is 1 strategy that you definitely will desire to comprise into your math instruction. It tin be used in many dissimilar ways and yous will notice that your students brainstorm using this sort of thinking for other math concepts as well.

NEXT STEPS: