Evaluating Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 2x + 3 is an algebraic expression.

Tags

CCSS.6.EE.A.2B

Front

What does it mean to evaluate an algebraic expression?

Back

To evaluate an algebraic expression means to substitute the values of the variables into the expression and perform the operations to find a numerical result.

Tags

CCSS.6.EE.A.2C

Front

Evaluate: 3x + 4 when x = 2.

Back

10

Tags

CCSS.6.EE.A.2C

Front

Evaluate: 5a - 2b when a = 3 and b = 1.

Back

13

Tags

CCSS.6.EE.A.2C

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered by the acronym PEMDAS.

Tags

CCSS.7.NS.A.3

Front

Evaluate: 4(y + 2) when y = 3.

Back

20

Tags

CCSS.6.EE.A.2C

Front

What is a variable in an algebraic expression?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression or equation. For example, in the expression 2x + 5, 'x' is the variable.

Tags

CCSS.6.EE.A.2B

Front

Evaluate: 7 - 2p when p = 3.

Back

1

Tags

CCSS.6.EE.A.2C

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression. For example, in 5x, 5 is the coefficient.

Tags

CCSS.6.EE.A.2B

Front

Evaluate: 2(a + 3) when a = 4.

Back

14

Tags

CCSS.6.EE.A.2C