Fraction Rules
When we multiply fractions we multiply...
straight across!
2/3 * 4/5
8/15
What is a mixed number?
A whole number with a fraction
What is the reciprocal of
11/8
8/11
What are the steps for multiplying fractions?
Multiply straight across (multiply numerators and multiply denominators)
Simplify if possible
How do we change a whole number into a fraction?
Put a 1 in the denominator, or put it over 1.
3/5 * 7/8
21/40
When multiplying a fraction by a mixed number, why do you have to turn in into an improper fraction?
So that you have a clear numerator and denominator to multiply
1/8 -: 3/5
5/24
Some animals don't use their mouths to breathe. How do platypuses breathe?
Through their sweat glands
3 word phrase to help us with dividing fractions.
Keep - Change - Flip
Name all three of Ms. Kaelle's cats...
(Bonus points if you name one of them and tell me what color she is)
Willow (Long hair, grey)
Lee (Short hair brown, white, and black)
Sookie (Short hair, grey and black)
Multiply the whole number by the denominator, then add the numerator
5/6 -: 1/8
9 2/3
True
When dividing fractions, what do you change and what do you flip?
you change the function to multiplication and flip the second fraction
5/12 * 9
15/4 or 3 3/4
1 1/3 * 1/8
4/24 or 1/6
1/2 -: 5
1/10
Why is a tomato a fruit and not a vegetable?
Because scientifically, there is no such thing as a vegetable.
What should you do first to mixed numbers when multiplying or dividing fractions?
Change them to improper fractions.
2/9 * 3/8
1/12
2 2/3 * 3/4
2
1/12 -: 7/9
3/28
What is the tallest land-based mountain?
Mt. Everest