Variables, Expressions, Terms, Coefficients-Pract Flashcard

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents a number in mathematical expressions or equations.

Front

What is an expression?

Back

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

Front

What is a term in an expression?

Back

A term is a single mathematical expression that can be a number, a variable, or a combination of both, separated by + or - signs.

Front

What is a coefficient?

Back

A coefficient is a numerical factor that multiplies a variable in an expression, such as the 6 in 6c.

Front

How do you evaluate an expression?

Back

To evaluate an expression, substitute the values of the variables into the expression and perform the arithmetic operations.

Front

What does it mean to simplify an expression?

Back

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

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

How many terms are in the expression 5 + 8a?

Back

There are 2 terms in the expression: 5 and 8a.

Front

Evaluate the expression 6ab + 2c when a = 3, b = 10, and c = 7.

Back

The evaluation gives 194.

Front

What is the correct equation for 'Two times the sum of a number and 5 is 20'?

Back

The correct equation is 2(x + 5) = 20.