
Matrix  A rectangular array of numbers, algebraic symbols, or mathematical functions. 

Mean  a value that is calculated by dividing the sum of terms by the number of terms. Also known as an average. 

Median  A value within a set of terms where there are an equal number of terms larger and smaller. 

Metric System  A decimal system of weights and measures, universally used in science, and the official system of measurement in many countries. 

Micrometer 1  A device for measuring very small distances, objects, or angles, especially one based on the rotation of a finely threaded screw, as in relation to a microscope.


Micrometer 2  A unit of length equal to one thousandth (103) of a millimeter or one millionth (106)of a meter.


Mixed Number  a whole number and a fraction Example: 5 1/2 

Mixed Number  A number consisting of a whole number and a fraction or a decimal. Example: 5 1/2, 7.34 

Mode  A value in a set of data that occurs most often. 

Multiplication  the process of repeating additions of the same number Example: 9 x 9 =81 