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- [Instructor] This
YouTube video will show you

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how to use fractions on your
TI-84 Plus and the TI-83 Plus.

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There's some slight
differences between the two.

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For more good tuff go to my
website andyborne.com/math.

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Alright.

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First things first,

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look over here on the
left side of the screen.

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Press second and then the
plus symbol on your key pad.

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The last key I press is
red so kind of watch that

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and then choose number one About.

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This is not gonna work unless
your calculator is upgraded

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to the most recent version
2.55MP or higher will do fine.

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Okay, the way to do it

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to put in fractions is
to press the alpha key

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followed by the y equals key.

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This little menu pops up here

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these other menus here do different things

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but we're going to be concerned
with the first one frac.

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The first one is n/d that's
numerator slash denominator.

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And it puts in a template
where we can put in fractions

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so how about we had 3/11

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to alpha y equals

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puts in the template

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eight over 22

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arrow over to finish that fraction

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I press enter and the
calculator gives us the answer

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as a fraction.

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Nice.

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Let's try a fraction with a mixed number

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alpha y equals

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how about 1/2 plus and
then how about one and 3/4

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alpha y equals

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and here we choose a second one

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this guy here

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there's the template

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one arrow to the right
three arrow down four

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1/2 plus one and 3/4

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I press enter and you'll notice
that it delivers the answer

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as an improper fraction.

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That's fine.

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Usually your math teacher
won't get mad at you.

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But if it says to deliver
the answer as a mixed number

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then what you need to do
is press alpha y equals

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and then right down here

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option number three will
convert it to a mixed number

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and if it's a mixed
number it'll convert it

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to an improper fraction.

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So there you go.

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Oh yes one more thing

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you can take fractions

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how about 1/3 to an exponent

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like let's say we want to
cube it to the power three

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look at that our answer 1/27.

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Alright, well what if we want
to do this on the TI-83 Plus

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we have to do a little bit
different procedure here.

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We don't have the alpha y equals on this

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but we can do fractions just the same.

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My previous example lets add 3/11

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and what I'm doing is I'm
putting it in parenthesis

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with the division symbol in between them

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that is the same thing as 3/11

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plus parenthesis eight over 22

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and it gives us the answer

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but it gives us in the form of a decimal.

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We can convert the decimal into a fraction

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by pressing the math key on
the far left of the keypad

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and choosing number one
convert to fraction.

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And like so and here we are 7/11.

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One thing to keep in mind

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let's say that we want to
have it convert to a fraction

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all in one step.

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I'm gonna take the 1/3 to
the power three example

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and our answer would be 1/27

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but I'm going to press

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before I press the enter key
I'm gonna press the math key

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and I'm gonna select convert to fraction

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so this is entirely all on one line

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when I press enter now

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it comes up instantly as one over 27.

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So there it is, I hope that
this was helpful for you.

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Thanks for watching.