- [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.