Adding and subtracting fractions

Adding and subtracting fractions

1. 1/2

   • 1= Numerator
   • 2= denominater

2. 1/2= 2/4= 3/6= 50/100

   • All these fractions say the same thing
     • They are equivilent fractions

3. 2/3 1/4

   • Find lowest denominator (Lowest number both numbers divide into.
     • 8/12 3/12
       • 4x 4x (3x4=12) (2x4=8)
       • 3x 3x (3x4=12) (1x3=3)
       • Don't add denominators when there the same
       • Add numerators
   • Answer= 11/12 (8/12+3/12)

4. 8/12. 3/12= 5/12

   • Subtract numerator
   • Don't subtract denominator