Adding and Subtracting Decimals

Topics for Today:

We are getting back into the swing of things, and setting up classroom routines.  Today we did a bit of review of adding and subtracting decimals.

**Adding/Subtracting Decimal Numbers MAIN IDEA***
--> When adding or subtracting decimals, always line up the decimal points!

We also did a brief review of subtracting decimals using regrouping, as well as bringing in zeroes (called annexing) to make sure our numbers line up.   We also discussed a few of the properties of equality.

Vocabulary:

identity property of addition, commutative property of addition, associative property of addition

Sections Covered in Textbook:

1-2: Adding and Subtracting Decimals (pages 11-15)

Resources & Tutorials:

1) How do you add decimals?
2) How do you subtract decimals?

3) 1-2 Adding and Subtracting Decimals Class Notes

Extras:

Find those numbers!