Term | Definition |
Zero Pairs | The name for two values that add to make zero or cancel each other out |
Additive Inverse | The opposite (or negative) of a value that sums to zero |
Absolute Value | a value's distance from zero on a number line |
Opposite | another word for the negative of a certain value |
Distance | how long a vector is for a certain value on a number line |
Integer | A number with no fractional part |
Rational Number | A number that can be made by dividing two integers. The word comes from "ratio". |
Commutative Property | The law that says you can swap numbers around and still get the same answer when you add. Or when you multiply. |
Associative Property | it doesn't matter how we group the numbers (i.e. which we calculate first) ...when we add... or when we multiply. |
Distributive Property | The law says that multiplying a number by a group of numbers added together is the same as doing each multiplication separately |
Positive Contexts | cash, above, gain, over, right |
Negative Contexts | debt, below, loss, under, left |
Charged Particle | The model where you separate values on a T-chart with negative on the left and positive on the right |
Vector Diagram/Number Line | The model where you use arrows that have a certain direction and a certain length based on whether they are positive or negative and how large the value is. |
Net Worth | The final value when all debt and all cash are combined |
Decomposing Strategy | The act of breaking a single value into multiple values |
Composing Stractegy | The act of building a single value out of smaller values |
Reciprocal | The number you can multiply a value by to make it equal 1. (e.g.- 4 x 1/4 = 1, or 3/4 x 4/3 = 1) |