Evaluating Expressions

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Tags

CCSS.6.EE.A.2B

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting variables with numbers and performing the operations.

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 dictates the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) - often abbreviated as PEMDAS.

Tags

CCSS.7.NS.A.3

Front

Evaluate the expression: 3r + 2e; r = 3, e = 2

Back

13

Tags

CCSS.6.EE.A.2C

Front

If p = -6, what does p + 4 equal?

Back

-2

Tags

CCSS.6.EE.A.2C

Front

Solve the expression: 2^4 - 24 ÷ 3 + 1

Back

9

Tags

CCSS.7.NS.A.3

Front

Evaluate the expression: 6 + 7b - 3a; a = 2, b = 8

Back

56

Tags

CCSS.6.EE.A.2C

Front

Evaluate this expression: (-2)^2 - (-5)^2

Back

-21

Tags

CCSS.7.EE.B.3

Front

What is a variable in an expression?

Back

A variable is a symbol (often a letter) that represents an unknown value in an expression or equation.

Tags

CCSS.6.EE.A.2B

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change, such as numbers like 2, -5, or 10.

Tags

CCSS.6.EE.A.2B