Singapore Math 2A, page 40-41

Megan is now starting to add with carrying. This is not knew as she is doing it in life of Fred.  This program does it in a neat manner. Here's a set of the problems:  3 + 7, 43 + 7, 243 + 7 , that is, it shows the steps in program.  One thing I like with this program is that they have a fun activity. On page 41, she answered problems in a hat that has a letter on it. Then, below, she finds the corresponding answer and above that in a space she puts the letter. Today , it spelled out "Happy Birthday".