| A | B |
| Area | the number of square units needed to cover closed figure. |
| Associative properties | more than two numbers can be added or multiplied in groups of two; the way the numbers are grouped does not matter. |
| Commutative properties | two numbers can be added or multiplied in any order. |
| Distributive property | to multiply a sum or difference by a number multiply each number of the sum or difference. |
| Equivalent | having the same value; equal. |
| Identity properties | adding 0 to a number and multiplying a number by 1 does not change the number. |
| Number equation | a statement that two number expressions are equal. |
| number expression | a number or numbers together with operation symbols. |
| Parentheses | a pair of grouping symbols (); may also mean multiplication. |
| Zero Property | a number multiplied by 0 is 0. |