6th Grade: Expressions and Equations

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 is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing an equal sign (=).

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value(s) of the variable(s) that make the equation true.

Front

What does it mean to solve an inequality?

Back

To solve an inequality means to find the range of values for the variable that makes the inequality true.

Front

What is a variable?

Back

A variable is a symbol (usually a letter) that represents an unknown value in mathematical expressions and equations.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equal sign and represents a value, while an equation has an equal sign and states that two expressions are equal.

Front

What is the solution to the inequality x + 5 ≤ 13?

Back

x ≤ 8.

Front

What does the number line represent for the inequality x ≥ 3?

Back

It represents all values of x that are greater than or equal to 3.

Front

What is the meaning of the symbol '≥'?

Back

The symbol '≥' means 'greater than or equal to'.