





NOTE: If the numerator was entered without the denominator it is treated as integer.
If the numerator was not entered and the denominator entered than calculation not performed.



Definition  Example  
Addition and subtraction of two fractions  
Multiplication of two fractions  
Division of two fractions  
Proper fraction  numerator < denominator  
Improper fraction  numerator > denominator  
Mixed fraction  Integer and fraction  
Mixed to improper fraction  
Improper to mixed fraction 
For an easy way to find the least common multiple of an array e.g. 8, 6, 42, 16, 32 follow the next steps: Divide each term of the array (gray column) by 2 see green row at top of the table, if the array item is not divisible by 2 write the number as is. Continue the process until all numbers that can be divided by 2 are 1, then start dividing by 3 and then by the next prime number. At the end multiply all the divisors at the top of the table (green row) to get the least common multiple. LCM = 2 • 2 • 2 • 2 • 2 • 3 • 7 = 672




