Math Vocabulary

3. A network of evenly spaced, parallel horizontal and vertical lines.
4. Any part of a whole is called a fraction (e.g., one-half written in fractional form is 1/2.
6. forms of a number Expressions that have the same value but are represented in a different format using the properties of numbers [e.g., ax + bx = (a + b)x].
7. One of the plane surfaces bounding a three-dimensional figure (a side).
10. The symbol used before a number to show that the number is radicand.
13. an expression Substitute numbers for the variables and follow the operation symbols to find the numerical value of the expression.
14. in words Directions requesting a written description of the procedures for finding the solution to the problem presented.
16. The use of rounding and/or other strategies to determine a reasonably accurate approximation, without calculating an exact answer.
18. A number that appears with a radical sign.
19. A proposition or supposition developed to provide a basis for further investigation or research.
20. A mathematical sentence (e.g., 2x = 10) that equates one expression (2x) to another expression (10).

1. A line segment extending from the vertex or apex of a figure to its base and forming a right angle with the base or basal plane.
2. (exponential form) The number of times the base occurs as a factor. For example, 2^3 is the exponential form of 2x2x2. The numeral two (2) is called the base, and the numeral three (3) is called the exponent.
5. Any symbol that could represent a number.
6. To estimate or infer a value or quantity beyond the known range.
7. graph A graph having definable limits.
8. The symbol designating the ratio of the circumference of a circle to its diameter, represented as either 3.17
9. Angle An angle with a measure of less than 90 degrees.
11. A transformation that produces the mirror image of a geometric figure.
12. table A table of x- and y-values (ordered pairs) that represents the function, pattern, relationship, or sequence between the two variables.
15. value A number's distance from zero (0) on a number line.
16. A collection of numbers, symbols, and/or operation signs that stands for a number.
17. A number or expression that divides exactly another number (e.g., 1,2,3,4,5,10, and 20 are factors of 20).