Mean - The mean is the same as the average. Add up the series of numbers and divide the sum by the number of values.
Median - The Median is the 'middle value' in your list or series of numbers. When the totals of the list are odd, the median is the middle entry in the list after sorting the list into increasing order. When the totals of the list are even, the median is equal to the sum of the two middle (after sorting the list into increasing order) numbers divided by two.
Midpoint - A point that is exactly half way between two set points.
Mixed Numbers - Mixed numbers refer to whole numbers with fractions or decimals. Example 3 1/2 or 3.5.
Mode - The mode in a list of numbers refers to the list of numbers that occur most frequently. A trick to remember this one is to remember that mode starts with the same first two letters that most does. Most frequently - Mode.
Monomial - An algebraic expression consisting of a single term.
Multiple - The multiple of a number is the product of the number and any other whole number. (2,4,6,8 are multiples of 2)
Multiplication - Often referred to as 'fast adding'. Multiplication is the repeated addition of the same number 4x3 is the same as saying 3+3+3+3.