Use Base-Ten diagrams and standard, expanded, and word forms to represent numbers. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Find Which One ...

Read, write, & compare multi-digit numbers using symbols including expanded form. Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two ...

We all harbor one particular prejudice. We are each and every one of us irrevocably focused on and devoted to our number system in base ten. Our languages, our engineering discussions, our methods, ...