We’ve been working on adding numbers to 100 WITHOUT regrouping, and students are showing a very good understanding of this skill using a strategy called “vertical addition”. This is a very traditional strategy that most people use, as seen below.
However, the 2Js are also learning some other ways to add (and eventually subtract) 2-digit numbers so they can decide which way works the best for them. So far we’ve tried adding using a 100 Chart:
We will learn several more strategies this week. Although students are encouraged to learn each strategy, they will soon discover the one that works for them and stick with it!