Ratios and Proportions

CCSS.Math.Content.5.NF.B.4 Apply and extend previous understandings of multiplication to multiply a fraction or whole number by a fraction.


A ratio shows the relative sizes of two or more values.

Proportion says that two ratios (or fractions) are equal. proporción

Variable: A symbol for a number we don't know yet. It is usually a letter like x or y. variable

equivalent fraction: fracción equivalente

A) http://www.mathsisfun.com/algebra/proportions.html

B) http://studyjams.scholastic.com/studyjams/jams/math/algebra/proportion.htm

C) http://www.brainpop.com/math/ratioproportionandpercent/proportions/

D) http://studyjams.scholastic.com/studyjams/jams/math/algebra/ratio.htm