4-1 and 4-2 Review

Front

If 9×4=36, does 9×4+5=36+6? Explain.

Back

No. A different number was added to each side of the equation.

Front

What is the Subtraction Property of Equality?

Back

If you subtract the same number from both sides of an equation, the two sides remain equal.

Front

What is the Multiplication Property of Equality?

Back

If you multiply both sides of an equation by the same number, the two sides remain equal.

Front

Back

Front

If 4s−2=12, does (4s−2)÷2=12÷2? Explain.

Back

Yes. Each side is divided by the same number.

Front

What is the Addition Property of Equality?

Back

If you add the same number to both sides of an equation, the two sides remain equal.

Front

What is the Division Property of Equality?

Back

If you divide both sides of an equation by the same non-zero number, the two sides remain equal.

Front

What is an equation?

Back

A mathematical statement that asserts the equality of two expressions.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is a variable in mathematics?

Back

A symbol used to represent an unknown value, often denoted by letters like x, y, or s.