Fractions
Check out this presentation by our Math Tutor Dr. Shohreh Rahmati about fractions.
Fractions and Ratios
The general form of a fraction is a/b, where b≠0. A ratio has the following form a:b, where b ≠0. One can convert fractions to ratios and vice versa.
Example:
5/7 as a ratio is 5:7.
Example:
4:9 as a fraction is 4/9.
Adding Fractions
Step (1): Make sure the numbers in the denominators are the same.
Step (2): Rename one or both fractions with the common denominator.
Step (3): Add numerators, do not add denominators.
Step (4): Simplify the fraction, if possible.
Example: 2/6+5/8.
Step (1): We multiply first fraction by 8/8 second fraction by 6/6.
(2/6).(8/8)+(5/8).(6/6)
Step (2): We add numerators
16/48+30/48=46/48
Step (3): We simplify
46/48=23/24.
