Gerico's Last Fraction Post

6:45 PM

(0) Comments

Adding and Subtracting Fractions

  • Find the Common Denominator
  • Add the numerator
5/7 + 1/2

10/14 + 7/14 = 17/14 14 divided of 17 = 1 3/14

3 + 2/7

3 x 7 + 2 = 21 +2 = 23/7

  • Always the same denominator
  • Subtract Numerator
2/3 - 5/12

8/12 - 5/12 =3/12 =1/2

Multiplying Fractions

  • Multiply the numerators
  • Multiply the denominator

3/4 x 2/6 = 6/24 = 1/4

Changed mixed fraction to an improper
multiply the numerators and denominators

8 1/2 x 11 1/3

8 x 2 + 1 = 17 3 x 11 +1 = 34

17 / 2 x 24/3 = 578/6

6 divided 578 = 93

Dividing Fractions

  • Find the reciprocal
  • Multiply the numerator to numerator
  • Multiply the denominator to denominator
  • Convert the fraction into a mixed fraction
  • Simplify

1/4 Divided 1/8 = 2

1/4 x 8/1 = 8/4 8/4 = 2

____________

1/8 x 8/1 = 1


2 divided 1/2 = 4

Word Problem

It takes 2 1/4 scoops of flour to make one cake.How many cakes do 15 scoops of flour make ?

15 divided 2 1/4

2 x 4 + 1 = 9 5 divided by 9 / 4

15 /1 x 4/9 = 6 2/3

_________________



4/9 x 9/4 = 1

1 - cakes do 15 scoops of flour make .

0 Responses to "Gerico's Last Fraction Post"

Post a Comment