Represent addition and subtraction on a horizontal or vertical number line diagram.
Number Sense, Properties, and Operations
- Are fluent with basic numerical and symbolic facts and algorithms, and are able to select and use appropriate (mental math, paper and pencil, and technology) methods based on an understanding of their efficiency, precision, and transparency
Formulate, represent, and use algorithms with rational numbers flexibly, accurately, and efficiently
Apply understandings of addition and subtraction to add and subtract rational numbers including integers.