U - Math terms glossary



undefined terms A term used without a specific mathematical definition.
uniform scale   A scale in which numbers that are equally spaced differ by the same amount. When creating a number line or coordinate grid system, you use a uniform scale.

Ex:Each tick mark stands for one tenth.

union of two sets The set of elements which are in at least one of the sets.
Ex: Let's say you are given the sets A={3,4,5} and B={4,5,6}, the union of the sets A and B, written A U B, would be {3,4,5,6}. Notice that there is no need to list the 4 and 5 twice.
unit cost  The cost per one unit of an object.
unit fraction A fraction with 1 in its numerator and a natural number in its denominator.
Ex: 1/3, 1/7 etc.
Remember ZERO is not a natural number nor is 1/2 or .5 or -7, so no such numbers will be found in the denominator of a unit fraction.

uniquely determined A situation in which there is exactly one element satisfying given conditions.
Ex: In the equation 3x+4=13, x is uniquely determined because only one number satisfies this situation, 3.
unit cube A cube in which every edge has length one unit.
unit square A square in which each side has length one unit.
unknown A variable which can be assigned different values.
unlike terms Terms that involve different variables or the same variable with different exponents.
EX: 3, 3x, and are all unlike terms.
U.S system of measurement A measurement system in common use in the United States today, based on inches and pounds. Also called the customary system of measurement.
12 inches = 1 foot
8 ounces = 1 cup
16 ounces = 1 pound
36 inches = 1 yard
2 cups = 1 pint
2,000 pounds = 1 ton
5,280 feet = 1 mile
2pints = 1 quart
1 square mile = 640 acres
4 quarts = 1 gallon



Fun Maths Games for Kids

 
Return to top of page Copyright © Math Learning - Yearbooks - School Books - School Reading Books - Learning Math for Kids - Kids Math Learning - Math Games for Kids - Math Books for Kids - Online Math learning - Maths Learning - Online Math Learning - Math learning software - Math Learn - Math Learning Disabilities - Math Playground - Math is Fun - Math Learning center - Math Online - 3 digit divisor worksheets - Math Olympiad - Math Games Olympiad 2010 www.mathlearning.org. All right reseved. | Powered by Kids Math Books