This explains the Order of Operations. It addresses the Common Core 5th Grade Math Operations and Algebraic Thinking stardard 5.OA.1: Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
Inches to miles... I taught this to my third graders today.... we are finished with multiplication and I found this! What great application of a concept! Half were unsure, but this was a great way to reach my students who are rarely challenged. In groups, we will practice this according to level.