1. Fractions
Ryan Swartzentruber

2. Fractions in our lives
Fractions are part of a whole number. It is a unit smaller than whole numbers.
Ex: 1/2, 1/3, 1/4, 1/6, 1/ , 27/32, 1 ½
The denominator is the bottom number
The Numerator is the top number
What would we ever use fractions for in life?
Used in our lives in many instances.
Pizza is cut into pieces or fractions.
Coins such as dimes, quarters, nickels, and pennies represent fractions.

3. Introduction to Fractions
= Whole Pizza
= 1 piece = ½ of whole Pizza
1 out of 4 pieces= 1/4th of whole pizza

4. Money A quarter is ¼ of an entire dollar
A dime is 1/10th of a dollar. It takes 10 dimes to make 1 dollar
A penny is 1/100 of a dollar. In order to get one dollar, you need 100 pennies.

5. Adding Pizza Fractions
+ =
½+1/4= 2/4+1/4= 3/4
Must have the denominator be the same.
Find Lowest common denominator by finding a common number in both fractions.
Then simply add the numerators.

6. Examples 1/4+1/4= 2/4= 1/2 1/4+3/4= 1 1/5+1/2= 2/10+5/10= 7/10
1/8+1/4=1/8+2/8=3/8
1/25+1/25=2/25
1/100+1/25=1/100+4/100=5/100=1/20
If Sally has ½ an apple and Jimmy gives sally 1/3 of his apple, how much apples does Sally have?
½+1/3= 3/6+2/6=5/6 of an apple.

7. Practice Problems 1/4+1/5= ?
If Johnny has one third of a pizza and he receives another third of a pizza, how much pizza does Johnny have?
1/3+1/10
1/4+1/4
1/2+1/2
If Jim Jinglehimmer has 3 dimes (3/10), 2 pennies (2/100) and one quarter (1/4) and a nickel (1/20) what fraction of a dollar does he have?