Ratios and ParttoWhole Fractions
Consider the following examples of ratios and fractions that represent a parttowhole relationship. The examples below each use the same numbers in the ratio and fraction. What similarities and/or differences do you notice?
Ratios 
Fractions (partwhole) 
7 gallons of gas for $12 (7:12) 
7 of the 12 gallons used in a trip (7/12) 
5 miles hiked in 2 hours (5:2) 
5 halfhour meetings (50/2) 
1 person, 1 vote (1:1) 
The fraction of principals voting in the last schoolwide election was 1/1. 

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