look for the A B/C button and press the first number, then the button then the second
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How to add fractions on a texas instruments TI-81
A fractions calculator can be bought online or from your local supplies store. A dedicated agent will be happy to show you the calculator that you need for math.
if you are looking to put it into a decmial then enter the fraction and press enter then F D artows are inbetween it.
You cant directly enter fractions, but you could enter it in as a division if you want to do simple things like multiplication, division, addition and subtraction. Eg:If you wanted to multiply 3 5ths by 4 6ths, you could put in the calculator:(3 / 5) x (4 / 6) = 0.4The answer of this sum could be written as a fraction: two 5ths Just to say, the numbers won't usually come out as whole as this, so if you want to do fractions on a calculator at the press of a button, buy a newer calculator. I'd recommend the CASIO Fx-115MS.
Simple, just put the division in parenthesis. For example; three fourths plus two thirds is (3/4)+(2/3)