Standard

Write, read, and evaluate expressions in which letters stand for numbers.

Subject | Subject

Some text here about the topic of discussion

​Learning Targets

• Write expressions with unknowns.

• Identify mathematical terms and use them to write or interpret expressions.

• Evaluate expressions with unknowns using the order of operations.

• Recognize and use expressions as common real-world formulas (i.e. volume of a cube, V = s³).

Subject | Subject

Some text here about the topic of discussion

Algebraic Expressions

What is an Algebraic Expression?

An algebraic expression in mathematics is an expression that is made up of variables and constants, along with algebraic operations (addition, subtraction, etc.). Expressions are made up of terms. 

Variables, Coefficients, Constants & Terms

• In the expression pictured,

  x is a variable, whose value is unknown to us which can take any value.

• 5 is known as the coefficient of x, as it is a constant value used with the variable term and is well defined.

• 3 is the constant value term which has a definite value

• The whole expression has two terms. Terms are separated by addition and subtraction signs.

Order of Operations

Mathematicians have devised a standard order of operations for calculations involving more than one arithmetic operation.

How to Evaluate an Algebraic Expression

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations.

How to Write an Algebraic Expression

Generally, you'll do this by replacing the words with operators that mean the same thing.

Thank You, Gracias, Danke, Merci, Spasibo

for learning with me today!