JJ

**Adding and Subtracting Decimals**
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**__How Do You Add Decimals?__**
[|see how right now!] You add decimals by writing it like a "simple" addition problem with whole numbers. (As seen below.) Remember to line up the decimals. 12.05 __+7.72__

What do you think that equals? The answer is 19.77. While adding, you must remember to carry out the usual procedure. [|see how to now!] You subtract decimals by setting it up like a usual subtraction problem. Let's make up a new problem. Remember you may need to add annex zeros, or extra zeros, to make the the numbers equal in length. 81.8 __- 6.71__ Did you remember to change 81.8 to 81.80? If you didn't you might have gotton the same answer, but it is much easier to insert annex zeros. The answer is 75.09.
 * __How do you subtract decimals?__**