Transcript Addition and Subtraction of Fractions Problems of the day: 2/9 + 4/9 = 1/3 + ¼ =

Addition and
Subtraction of
Fractions
Problems of the day: 2/9 + 4/9 =
1/3 + ¼ =
Like denominators
2/9 + 4/9
2 /9 + 4/9 = 2+4/ 9 Keep the
denominators the same. Add the
numerators.
 6/9 = 6÷3/9÷3 = 2/3 Simplify.

Different Denominators
4/5 + 2/3
 Find a common denominator 15
 4/5= 12/15 Get the equivalent
fractions
 2/3 = 10/15
 12/15 + 10/15 = 22/15
 22/15 = 1 7/15

You try it.
Add 3/5 + 1/5
 7/8 + 3/8
 1/3 + 1/8
 ¾ + 1/6
 4/5 + 1/3

Subtract fractions
2/5 – 1/5 = 1/5 Keep the
denominator. Subtract the numerator.
 ¾ - 1/3 Get a common denominator
12
 Get the equivalent fraction.
 ¾ = 9/12, 1/3 = 4/12
 9/12- 4/12 = 5/12

Homework p. 194 1-33

Good luck with your homework.