Algebra Flashcard

Front

What is a variable in algebra?

Back

A symbol, often a letter, that represents a number in an expression or equation.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting numbers for variables.

Front

What is an expression?

Back

A combination of numbers, variables, and operations (like +, -, ×, ÷) without an equals sign.

Front

What is an equation?

Back

A mathematical statement that two expressions are equal, indicated by the '=' sign.

Front

What does '3 more than h' mean in algebra?

Back

It means to add 3 to the variable h, represented as h + 3.

Front

What is the rule for the number of legs of dogs?

Back

The number of dogs times 4 equals the number of legs.

Front

What does it mean to multiply by a number?

Back

To increase a number by a certain factor, for example, multiplying by 3 means to take a number and add it to itself three times.

Front

What is the difference between addition and multiplication?

Back

Addition combines numbers to get a total, while multiplication is repeated addition of a number.

Front

What is a mathematical operation?

Back

An action performed on numbers, such as addition, subtraction, multiplication, or division.

Front

What does 'multiply by 4' mean?

Back

To take a number and add it to itself four times.