Addend, Sum, and Plus

The video tutorial introduces the concept of addends in addition, explaining how to find missing addends using various strategies such as subtraction, the double strategy, and the number line method. It provides practice problems to reinforce these concepts and concludes with more challenging double-digit addition problems.

What is the first step in using the subtraction strategy to find a missing add in?

How many slices of pizza are left if 9 out of 12 slices are eaten?

What is the missing add in for the equation 8 plus what equals 14?