Tuesday, June 2, 2009

HOMEWORK --- Fractions: Addition & Subtraction

Watch this video clip:

Why do need fraction?



http://mrcsclassblog.blogspot.com/2007/04/why-do-we-need-fractions.html



Extra notes about fraction:


ADDITION:

—Adding Fraction:
1.Find LCD or multiply the denominator of the second fraction
2.Then solve, example:
1/3 + 2/5 =
(1/3)*5 = 5/15
(2/5)* 3 = 6/15
=5/15 + 6/15 = 11/15




—Subtracting Fraction:
1.Find LCD or multiply the denominator of the second fraction
2.Then solve, example:
3/5 -1/4=
(3/5)* 4 = 12/20
(1/4)*5 = 5/20
=12/20 – 5/20 = 7/20



Do this homework:

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