Writing and Evaluating Expressions with Variables:
Writing Expressions:
Writing expressions is all about comprehending what is written in words and translating the ideas into numbers ad operations. Students need to know the key words that denote each operation  addition, subtraction, multiplication, and division  and understand the words that describe the order in which each element needs to be placed. They also need to be able to use variables to represent unknowns or the words "a number" in the written form of an expression.
Addition example:

Subtraction example:

Multiplication example:

Division example:
