Welcome to my math blog! The purpose of this blog is to help you stay informed about our learning and experiences that have taken place during our math class. I have also included links your child (and you) may want to use in order to supplement math learning in 5th grade.

## Thursday, October 6, 2016

### Estimating Sums and Differences of Fractions: Notes

Today we began working with estimating the sums and differences of fractions.  We started by using a fraction number sense page from "Common Core Math Interactive Notebook:  Numbers and Operations:  Fractions" by Jennifer Findley.  Basically, there is a page where we can create a foldable that allows us to look at fractions to determine if they are closer to 0, 1/2, or 1.

I also found a website that had a plethora of activities that went right along with this topic and included estimating both fractions and mixed numbers.  The site is called Math Worksheets Island.  What I liked from this was that it laid out three rules to use when estimating sums and differences:

1. If the numerator is much smaller than the denominator, then the result will be 0.
2. If the numerator is about one half of the denominator, then the result will be 1/2.
3. If the numerator and denominator are close to each other, then the result will be 1.
I combined both of these ideas into one foldable.  Then we began practicing estimating sums and differences with fractions.