Teachers, save “Adding 2-digit by 1-digit by decomposing” to assign it to your class.

Numbers can be added together many different ways. Let's start by using the decomposing method. 1. Tap the button. 2. Using the tool, complete the 2-digit by 1-digit addition problems by using the decomposing method. The first one has been done for you as an example. 3. Tap the when you are done to add to your journal.