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Unit 1- Mr. Hunt

Operations with Rational Numbers

TermDefinition
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)
Created by: mrhunt
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