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# Fraction word problem: pizza

CCSS.Math:

## Video transcript

Brandon ate five slices of apple of pie I'm just assuming it's apple pie they didn't tell me that Gabriela ate three slices if they're originally nine slices what fraction of the pie was eaten so let me let me see if I can draw draw this thing out so let me draw the pie I will draw the pie in a yellowish color so let me try my best so let's see how well I'm good I am at drawing a pie so I'll just draw it from the top view as a circle and there are nine slices I think it's a reasonable assumption to say that they're nine equal slices so we have nine equal slices of pie and I'll just make sure they're initially nine equal equal slices what fraction of the pie was eaten so let's first divide this into nine sections so one way I could do that I could divide it into three sections first three sections first looks like a peace symbol actually looks more like the Mercedes emblem so I'll draw it into three sections first and I'll do each of those into three sections and I'll have nine so let's see I'll draw like like that and like that try my keep in mind I'm trying to make these as equal as possible so bear with me if they don't look 100% equal but I'm trying I am trying my best so nine equal nine equal slices so that looks that looks pretty respectable so here's our our pie that initially had nine equal slices now they tell us that Brandon ate five slices of pie so Brandon eats seems like a hungry young man so he eats one two three four five you could say that he ate five ninths of the pie but that's not it that's not what they're asking they're singing total not just how much does Brandon eat but how much was eaten total between gab between Brandon and Gabriela and they tell us Gabriela ate three slices so she ate one sounds like they didn't really eat dinner one two three so now let's answer their question what fraction of the pie was eaten well we know that there was a total of nine nine equal slices of pie what fraction was eaten well as you see one two three four five six seven eight eight ninths of the pie was eaten so let's actually type that in and then we will do it right over here we say eight and we use that little slash symbol on your computer like this eight over nine or eight divided by nine or eight ninths of the pie was eaten let's do a couple more of these you Shawn ate two slices of pizza Omar ate three slices if they're originally eight slices what fraction of the pie is remaining so this is interesting actually let me let me copy and paste this so that I can do it on my little on my little notepad right over here so let's let's do it right over trying to find some space there you go let me put that in here so same thing we have a well this is a pizza now not a pie and so pizza I will draw in brown it has eight and we can assume it's initially 8 equal slices 8 equal slices so let me it's actually a little bit easier to draw 8 equal slices since 8 is an even number so let's see so let's that is my best attempt at drawing a circle and let's see first I can divide the pizza into 2 slices then I can divide it into 4 slices for I'm going to try to make them look as equal as possible and now I'm going to with two more cuts I should be able to get eight so and one more just like this so there you have it a pizza that has 8 equal slices now they tell us each on ate two slices of pizza so heats one two slices of pizza Omar ate three slices omar ate three so he eats one two one two three slices of pizza now you might have me to say how okay the answer to this must be 1 2 3 4 5 must be that they ate five slices of pizza over a total of eight slices of pizza so they ate 5/8 of the pizza you would be right and saying that they ate 5/8 of the pizza because eight one two three four five out of a total of eight pieces but that's not what this what this question is asking they are asking what fraction of the pizza is remaining so what's left over after Ishaan and Omar had their go at the pizza well what's remaining is one two three slices so what's remaining is three out of the original eight equal parts or three eighths of the pizza is remaining so let's input that so we could go right here and we would say three over eight three eighths is remaining so let's check our answer and we got it right