Evaluate 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.

Front

What does it mean to evaluate an expression?

Back

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

Front

Evaluate the expression: 4y – 5 when y = 6.

Back

19

Front

Evaluate the expression: n² + 7 when n = 3.

Back

16

Front

Evaluate the expression: r(r – 9) when r = 11.

Back

22

Front

Evaluate the expression: 5(v + 1) when v = 4.

Back

25

Front

Evaluate the expression: 2q + 3 when q = 5.

Back

13

Front

What is a variable in an expression?

Back

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

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).

Front

What is a coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression.