Addition and Addition and Subtraction with Subtraction with DecimalsDecimalsToday you will learn to:Today you will learn to:• solve problems by adding and subtracting fractions.

M07.A-N.1.1.1, M07.A-N.1.1.2: To apply properties of operations to add and subtract rational numbers, including real-world contexts; To represent addition and subtraction on a horizontal or vertical number line.

Warm-up Problem: Warm-up Problem: Subtracting DecimalsSubtracting DecimalsThe average length of a humpback whale is 13.7 meters. The average length of a killer whale is 6.85 meters. How much longer is the humpback whale than the killer whale?

Adding and Subtracting Adding and Subtracting DecimalsDecimalsRULERULE: When adding and/or subtracting : When adding and/or subtracting decimals, be sure to align the decimal points.decimals, be sure to align the decimal points.

NOTE: If necessary, insert zeros at the end of each so that each has the same number of decimal places.

2.310 19.100+ 1.882 23.292

19.100- 1.882 17.218