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 is a coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression. For example, in 4x, 4 is the coefficient.

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 the 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 determines the sequence in which operations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered as PEMDAS.

Tags

CCSS.7.NS.A.3

Front

What operation should be performed first when simplifying the expression 3 + 4 × 2?

Back

Multiplication should be performed first, so the expression simplifies to 3 + 8 = 11.

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

Front

How do you represent '5 less than a number b' in an expression?

Back

It is represented as b - 5.

Tags

CCSS.6.EE.A.2A

Front

What is the result of evaluating the expression 2x + 3 when x = 4?

Back

Substituting x with 4 gives 2(4) + 3 = 8 + 3 = 11.

Tags

CCSS.6.EE.A.2C

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

Tags

CCSS.7.EE.A.1

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not include an equality sign.

Front

What is the expression for splitting $60 among f friends?

Back

The expression is 60/f.

Tags

CCSS.HSA-SSE.A.1A