ashley dubord r-4 oall students in the picture are going to share the cake equally. how many pieces...
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Ashley DuBord
R-4
o All students in the picture are going to share the cake equally. How many pieces of cake should we cut?
o We’ll find the answer later
o Each piece of cake is called a Fraction of the cake.
How to Make a Fraction!
o First you take the square
o Then you divide it into equal parts
o Color one part Red
Making a Fraction
o Now take the Red part and make it into a fraction
o Red parts: 1o Total parts: 4o Fraction of Red parts
to total partso 1/4 = red parts/total
parts
1 red part 4 total parts
Making a Fraction
o Let’s explain this a bit more carefully
o If the cake is cut into eight pieces and three are not eaten. What’s the fraction of uneaten pieces?
o Ans: 3/8
Fraction
Specific Part Divided by Total number of Parts
Ex: Piece of Cake Not Eaten
Ex: Total Number of Pieces of Cake
Back to Sharing the Cake!
o How many slices do we need if there are seven children and we do not want leftovers?
o Ans: 7 slices
o What if a student doesn’t eat their cake. What fraction of the cake is left uneaten?
o Ans: 1/7
Practice
o Write down the fractions of the different color part for these objects.
o Answers:o 1. 2/6 o 2. 3/7o 3. 5/10o 4. 3/6
1
2
3 4
Extra Help with Fractions at Home
o A great website that I found on fractions http://math.rice.edu/~lanius/fractions/index.html
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