Chapter 3.2, Problem 3P

   Figure 3.13 indicates a make-a-ten method for adding $6+8.$

1. Write equations that correspond to the make-a-ten method for adding $6+8$ depicted in Figure 3.13. Your equations should make careful and appropriate use of parentheses. Which property of arithmetic do your equations and Figure 3.13 illustrate?

 

   Figure 3.13 A dot picture for $6+8.$

Make a math drawing for $7+5$ that illustrates a make-a-ten method. Write equation that correspond to the strategy indicated in your picture, making careful and appropriate use of parentheses.