My Math Ch 2 Vocab

This property states that numbers can be added in any order and it does not change the sum.

• Identity Property

• Commutative Property

• Associative Property

• Subtraction Rule

A letter or symbol used to represent an unknown quantity.

• Unknown

• Sum

• Variable

• Difference

For any number, zero plus that number is the number.

• Associative Property

• Commutative Property

• Subtraction Rule

• Identity Property

The number from which another number is subtracted.

• Minuend

• Subtrahend

• Subtraction

• Difference

The number that is not identified or known in a math equation.

• Minuend

• Subtrahend

• equation

• unknown

The property that states that the grouping of addends does not change the sum.

• Associative Property

• Commutative Property

• Identity Property

• Subtraction Rule

A sentence that contains an equal sign (=), showing that 2 expressions are equal.

• unknown

• equation

• variable

• sum

A number subtracted from another number (usually the second number in the equation)

• subtrahend

• minuend

• difference

• variable

An answer that is close to the exact answer.

• Sum

• Difference

• Estimate

• Product

The usual way of writing numbers as digits.

• Word Form

• Standard Form

• Expanded Form

• Digits