Course 2, Lesson 5, Place Value through Trillions/ Reading and Writing Whole Numbers

1. Understand that integers can be divided, provided that the divisor is not zero, and every quotient of integers (with non-zero divisor) is a rational number. If p and q are integers, then -(p/q) = (-p)/q = p/(-q). Interpret quotients of rational numbers by describing real-world contexts. 2. Apply properties of operations as strategies to multiply and divide rational numbers. 3.Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities.