# 5-6a Add Subtract Fractions.ppt - Wikispaces

Document Sample

```					Add and Subtract
Fractions

Problem of the Day

What are the important facts?

To find the greatest number of
equal groupings, find the greatest
common factor of 18 and 24.
RECALL
To add fractions with unlike denominators…
1. Find LCD
2. Make equivalents
denominators…

1. Find the LCD of the fractions.

2. Rename one or both fractions
using the LCD (equivalents).

3. Add. Express the sum in lowest
terms.
Add with Unlike Denominators, Like Signs.

sum is the same as the sign of the addends.
Add with Unlike Denominators, Unlike Signs.

To add fractions with unlike signs…SUBTRACT!! The sign of the
sum is the same as the addend with the greater absolute value.
Subtract with Like & Unlike Denominators.

To subtract signed fractions…change subtraction to addition of the
opposite.
Subtract.

To subtract signed fractions…change subtraction to addition of the
opposite.

```
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
 views: 0 posted: 3/23/2013 language: English pages: 8