Adding Numbers

To add numbers in our decimal system, write the numbers underneath each other so that the decimal points and the corresponding columns (or placeholders) line up. Then add the numbers in each column, starting from the right.

[ Remember that when you are adding, if the sum is larger than 10, you will need to regroup (or carry) into the next place holder. ] For example, let’s add 26 full stop two plus four zero eight full stop 75 plus 0.0 seven:

Pencast symbol If it’s been a while since you’ve worked with addition, especially with decimals, please check out the Adding Numbers pencast. This  explains how to regroup or carry (Click on “View document”).

View document [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)]

Addition in the Real World