1. Unit 2 vocabulary
Integers: The set of whole numbers and their opposites { , -1, 0, 1, }.
Zero Pairs: The result of a positive counter paired with a negative counter.
Ex:
Pictorial Models: Visual representation as by photography or painting.
Ex:
4+ (-7)= -3

2. numbers that is being added in order to find a sum.
Adding Integers: When adding two positive integers the answer will always be positive. When adding two negative integers the answer will always be negative. When adding a positive and a negative integers the answer will keep the the sign of the larger number
Sum: The addend is one of the
numbers that is being added
in order to find a sum.
Additive inverse: A number that when added to a given number, results in a sum of zero.
Example: The additive inverse of 4 is -4 because 4 + (-4) = 0.

3. Subtracting Integers: When subtracting positive integers the answer will be positive. When subtracting negative integers the answer will depend on the larger number
Ex: -3-4=-7 or -3-(-4)=1 . When two negative signs are side by side they will change to a positive sign. .
Difference: The difference is the answer in a subtraction problem.
Example: 4 Minuend
-1 Subtrahend Difference

4. Multiplying Integers: When multiplying integers follow the rules of:
+ x + = +
- X - = -
+ x - = -
Factor: The factor of a number is a number that divides that number exactly.
For example, the factors of 6 are 1, 2, 3 and 6.
Product: The product is the answer in a multiplication problem.
Example: Multiplicand
x 2 Multiplier
10 Product

5. Dividing integers: When dividing integers the same rules apply as multiplication.
+ x + = +
- x - = and x - = -
Divisor: is the number that the dividend is divided by (in long division).
Example: 6 ÷ 2 = 3
Dividend: is the number that is divided (in long division). The dividend divided by the divisor is the quotient.
Example: 6 ÷ 2 = 3
Quotient: is the answer in long division. The dividend divided by the divisor is the quotient.
Example: 6 ÷ 2 = 3

6. Coordinate Plane: A plane, also called a coordinate grid or coordinate system, in which a horizontal number line and a vertical number line intersect at their zero points.
X-Axis: The horizontal line on a coordinate plane.
Y-Axis: The Vertical line on a Coordinate Plane
Quadrant: A quadrant is a quarter of a plane. The x-axis and y-axis divide the x-y plane into four quadrants. The axes themselves are not part of the quadrants.

7. Ordered Pair: A pair of numbers used to locate a point in the coordinate plane or the solution of an equation in two variables. An ordered pair is written in the form:
Ex. (3,2) (x-coordinate, y-coordinate).
Coordinates: are an ordered pair of numbers that show the location of a point on the x-y plane. Every point on the plane can be located by a pair of coordinates (x,y), which notes its distance from the x-axis and the y-axis.
Respectively: in the order given
Concrete: capable of being perceived by the senses; not abstract or imaginary; "concrete objects such as trees"

8. Line segment: the part of a line that is between two endpoints.
Ex. ._________________.
Endpoint: the point at the beginning and end of a line segment
Ex. ._______________.
Midpoint: On a line segment, the point that is halfway between the endpoints.
Ex _________._________.