**Math Vocabulary List**
**#1-10**
**Sum: **the total or whole amount. Addend + Addend = Sum
**Difference: **difference between two numbers.
**Associative property of addition: **in addition, no matter how the numbers are grouped, the answer will always be the same.
**Commutative property of addition: **in addition, numbers may be added together in any order.
**Identity of property of addition: **when zero is added to a number the result is the number itself.
**Distributive property of addition: **the sum of two numbers times a third number is equal to the sum of each addend times the third number.
**Expanded form:** a way of writing numbers to show place value.
**Word form: **writing numbers using words.
**Equal sign: **used to show equivalence.
**Value: **numerical worth or amount.
**#11-20**
**Equation:** mathematical statement containing an equal sign, to show that two expressions are equal.
**Operations:** there are four basic operations in arithmetic used to solve problems. They are addition, subtraction, multiplication, and division.
**Regroup:** used to assist when trading or carrying in addition and subtraction.
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