4th grade math practice with decimals

Learning how to add, and subtract decimals is as easy as one, two, three!  The first step in solving an addition problem with decimals is to line up the decimals.  For example, if you have to add a number where one number lies after its decimal to another number where two numbers lie after its decimal, then you would simply put a place holder, or a zero, next to your first number's digit that lies after its decimal.  It may sound difficult, but here is an example.  To add 125.2 + 136.58, you would first line the decimals up and then place a zero next to the .2 in the first number, so that you can keep all of your columns nice and neat.  In other words, you will add 125.20 + 136.58.  Your answer should be 261.78.  For more practice, you can complete this worksheet at the following website: http://www.education.com/worksheets/fourth-grade/math/.  The title of the worksheet is called "Dizzy Over Decimals: Addition # 1."  To subtract decimals, you do the exact same procedure as you did before to add decimals.  For example, to subtract 458.961 - 62.54, you would simply add a place holder to your second number: 62.540.  If it helps to place a zero before the 6 in your first number, you can do so: 062.540.  Next, you would drop your decimal down to your answer and start subtracting.  Your answer should be 396.421.  For a video of how to add and subtract decimals, go to http://www.youtube.com/watch?v=Mn3BKVuWVP4.  I hope this helps!

These are examples of adding and subtracting with decimals for further assistance: