If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
Current time:0:00Total duration:2:31

Identifying numerators and denominators

CCSS.Math:

Video transcript

we're asked to identify the numerator and denominator in the fraction 3 over 4 or 3 for it so let's rewrite this just so it's nice and big so let me just write the fraction so we have 3 over 3 over 4 3 over 4 now they want to start to define the numerator and the denominator the numerator so the numerator is just the number on top so the numerator is the 3 right there and then they want us to find the denominator the denominator is just the number on the bottom it's the 4 so if they say what's the numerator 3 what's the denominator it's 4 just a number on the bottom they could have just call this the number on the bottom they could have just called this the number on top now to think about what this represents what this fraction represents you can think of 8 of 3 out of 4 pieces of a pie that's how I think about it so you can imagine the denominator tells us what are we taking a fraction out of or how many pieces are there so let's imagine a pie like this so we could draw it like what we could draw it is a square pie so we could draw it as a square pie so this is what the denominator represents this is what the number on the bottom represents and then 3 says we are representing three of those four pieces so this 3 tells us that out of four possible ones I guess you could think of it we are using 3 or maybe we're eating 3 so you can imagine someone says I ate 3/4 of a pie this would be read as 3/4 they're eating the blue portion of the pie if we cut it this way if we you imagine a round pie it would look like this let me draw a round pie so that is my round pie let me cut it into four equal pieces or roughly equal pieces and if someone says I ate 3/4 of this pie where the 3 is the numerator and then the 4 and you'd read that it's 3/4 the 4 is the denominator they would eat this much of the pie they would eat 3 of the 4 pieces they would eat 3 of the 4 so this is one peace this is two pieces and this is three pieces so you could imagine the for the denominator represents the total number of pieces in the pie and then the three represents how many of those we ate