Number Systems

4. - In a grid, the horizontal axis.
6. - The intersection of the x- and y- axes in a coordinate plane, described by the ordered pair (0, 0).
10. - The four sections of a coordinate grid that are separated by the axes.
12. - A reference line from which distances or angles are measured in a coordinate grid.
14. plane - A 2-dimensional system in which the coordinates of a point are its distances from two intersecting straight lines called axes.
15. decimal - A decimal which has repeating digits or a repeating pattern of digits.
16. - A special ratio that compares a number to 100 using the symbol %.
17. Property - a • (b + c) = (a • b) + (a • c) and a • (b – c) = (a • b) – (a • c), where a, b, and c stand for any real
18. - In a grid, the vertical axis.

1. - A statement that two mathematical expressions are equal.
2. - The set of whole numbers and their opposites.
3. value - The distance of a number from zero on the number line. Absolute value is always positive.
5. - To find the value of a mathematical expression.
7. pair - A pair of numbers that gives the coordinates of a point on a grid in this order (horizontal coordinate, vertical
8. - Naming the same number.
9. - An integer that divides evenly into another.
11. inverse - A number that is the same distance from 0 on the number line, but in the opposite direction.
13. - An ordered pair of numbers that identify a point on a coordinate plane.