Mathematical Expressions and Equations Flashcard

Front

What is a mathematical expression?

Back

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

Front

What is a variable in mathematics?

Back

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

Front

What is a constant in mathematics?

Back

A constant is a fixed value that does not change, such as numbers like 4 or -9.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of terms without an equality sign, while an equation states that two expressions are equal using an equality sign.

Front

Identify the constants in the expression: 4 + n.

Back

The constant in the expression is 4.

Front

Identify the variables in the expression: 6 + x.

Back

The variable in the expression is x.

Front

What does the equation 9 - n = 15 represent?

Back

It represents a relationship where the difference between 9 and n equals 15.

Front

How many variables are in the equation 2 + x = 12 + 7?

Back

There is 1 variable (x) in the equation.

Front

How many constants are in the equation 2 + x = 12 + 7?

Back

There are 3 constants (2, 12, and 7) in the equation.

Front

What is the result of the expression 9/b if b = 3?

Back

The result is 3, since 9/3 = 3.