- [Instructor] This
YouTube video will show you

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

There's some slight
differences between the two.

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

Alright.

First things first,

look over here on the
left side of the screen.

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

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

and then choose number one About.

This is not gonna work unless
your calculator is upgraded

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

Okay, the way to do it

to put in fractions is
to press the alpha key

followed by the y equals key.

This little menu pops up here

these other menus here do different things

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

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

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

so how about we had 3/11

to alpha y equals

puts in the template

eight over 22

arrow over to finish that fraction

I press enter and the
calculator gives us the answer

as a fraction.

Nice.

Let's try a fraction with a mixed number

alpha y equals

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

alpha y equals

and here we choose a second one

this guy here

there's the template

one arrow to the right
three arrow down four

1/2 plus one and 3/4

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

as an improper fraction.

That's fine.

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

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

then what you need to do
is press alpha y equals

and then right down here

option number three will
convert it to a mixed number

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

to an improper fraction.

So there you go.

Oh yes one more thing

you can take fractions

how about 1/3 to an exponent

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

look at that our answer 1/27.

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

we have to do a little bit
different procedure here.

We don't have the alpha y equals on this

but we can do fractions just the same.

My previous example lets add 3/11

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

with the division symbol in between them

that is the same thing as 3/11

plus parenthesis eight over 22

and it gives us the answer

but it gives us in the form of a decimal.

We can convert the decimal into a fraction

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

and choosing number one
convert to fraction.

And like so and here we are 7/11.

One thing to keep in mind

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

all in one step.

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

and our answer would be 1/27

but I'm going to press

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

and I'm gonna select convert to fraction

so this is entirely all on one line

when I press enter now

it comes up instantly as one over 27.

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

Thanks for watching.