#### NY-7.NS.1

Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers. Represent addition and subtraction on a horizontal or vertical number line.

#### NY-7.NS.1d

(d) Apply properties of operations as strategies to add and subtract rational numbers.

#### NY-7.NS.2

Apply and extend previous understandings of multiplication and division and of fractions to multiply and divide rational numbers.

#### NY-7.NS.2c

(c) Apply properties of operations as strategies to multiply and divide rational numbers.