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+,   Math Dictionary 
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L L equals 50 in Roman numerals. 
latitude Latitude is the angular distance north or south from the equator to a particular location. The equator has a latitude of zero degrees. The North Pole has a latitude of 90 degrees North; the South Pole has a latitude of 90 degrees South. 
LCD LCD stands for Least Common Denominator. LCD is the smallest common denominator of two or more fractions. For example, the lcd for 1/7 and 3/5 is 35. 
LCM The least bommon multiple (LCM) is the smallest number that is a multiple of two or more numbers. For example, the lcm of 6 and 8 is 24, or LCM(6,8)=24. 
least common denominator The least common denominator (LCD) is the smallest common denominator of two or more fractions. For example, the lcd for 1/7 and 3/5 is 35. 
least common multiple The least common multiple (LCM) is the smallest number that is a multiple of two or more numbers. For example, the LCM of 6 and 8 is 24, or LCM(6,8)=24. 
less The opposite of less is more. 
< less than The mathematical symbol < means "less than." When one number is less than a second number, the first one is smaller than the second. For example, 1 is less than 2, which is written 1 < 2. 
line A line is a set of points that form an infinitely long straight path that extends in both directions. The equation y=mx+b or ax+by+c=0 graph a line (these are linear equations). 
line segment A line segment is a portion of a line between two given points. 
linear equation A linear equation is a first degree equation (the variables are raised to the first power). For example, y=mx+b and ax+by+cz=0 are examples of linear equations  when graphed, they plot a line. 
logarithm Computing a logarithm is the inverse of exponentiation. For example, if you want to compute the log to the base 10 of 100, also written log_{10}(100), you must determine the power you have to raise 10 to in order to get 100. Since 10^{2}=100, log(100)=2. Similarly, since 10^{1}=10, log(10)=1. Logarithms to the base 10 are called common logarithms and written log or log_{10}. Logarithms to the base e are called natural logarithms and written ln or log_{e} [note: ln(e) = 1]. 
logic Logic is the study of reasoning and proof. 
long When something is long, it is not short. 
long division In long division, the dividend is divided by the divisor, resulting in a quotient plus a remainder. 
longitude Longitude is the angular distance east or west from the northsouth line that passes through Greenwich, England, to a particular location. Greenwich, England, has a longitude of zero degrees. The farther east or west of Greenwich you are, the greater your longitude. Midway Islands (in the Pacific Ocean) have a longitude of 180 degrees (they are on the opposite side of the globe from Greenwich). 
+,   Math Dictionary 
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A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z 
Counting  Addition  Subtraction  Multiplication  Division 
Number Line  Fractions  Decimals  Graphs  Measurement  Rounding 
Click on an underlined word for more information on that subject. If the math term you are looking for is not in the dictionary, please email us.
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