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A recipe for 1 batch of cookies calls for 1/4 cup of sugar. You want to make 3 batches of cookies. How much sugar do you need?
A recipe for 1 batch of cookies calls for 1/4 cup of sugar. You want to make 3 batches of cookies. How much sugar do you need?
LEARNING TARGET
LEARNING TARGET
I can multiply and divide fractions.
I can multiply and divide fractions.
I DO
I DO
How do we multiply fractions?
How do we multiply fractions?
Here are a few examples:
Here are a few examples:
What if we are multiplying a fraction by a whole number?
What if we are multiplying a fraction by a whole number?
Turn the whole number into a fraction by putting it over one!
Turn the whole number into a fraction by putting it over one!
How do we divide fractions?
How do we divide fractions?
We turn the problems into multiplication!
We turn the problems into multiplication!
We use "Keep, Change, Flip" or KCF to do this:
We use "Keep, Change, Flip" or KCF to do this:
KEEP the first fraction the same
CHANGE the division to multiplication
FLIP the second fraction upside down
WE DO
WE DO
Let's get telepathic!
YOU DO
YOU DO
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