Fraction Rules
What needs to be the same when you add and subtract fractions?
The denominator
2/3 * 4/5
8/15
What is the reciprocal of
11/8
8/11
Multiply straight across (multiply numerators and multiply denominators)
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
3/8 -: 2/3
9/16
Find the reciprocal of 14
1/14
3 word phrase to help us with dividing fractions.
Keep Flip Change (KFC)
4 * 7/8
7/2 or 3 1/2
6 -: 5/8
48/5 or 9 3/5
Solve and simplify.
2/11 + 5/33
1/3
It took Jason 2 5/6 hours to drive to the beach. It took Mary twice as long. How long did it take Mary to drive to the beach?
17/3 or 5 2/3
1/2 -: 5/8
4/5
Solve and simplify.
(2/3 x 4) + 1/3
3/1 or 3
2/9 * 3/8
1/12
3/8 -: 7/12
9/14
What is your maths teacher's favorite Christmas movie?
Nativity