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RatiosIn this lesson, the objective is to write ratios as the relationship of one number to another number. Definition A ratio is a comparison of two numbers that uses division. The division is usually written as a fraction Say for instance, you are in a classroom. In the classroom, there are boys and girls. If there are 6 girls and 3 boys in that classroom, you can say that the ratio of boys to girls is 3/6 You can also write 3 to 6 or 3:6 3/6 is equal to 1/2 or 0.5 and it means that there are half as many boys as girls in the classroom. However, the ratio of girls to boys is 6/3 6/3 is equal to 2 and it means that there are two times as many girls as boys in the classroom. You can also define the following: Ratio of girls to number of students in the classroom: 6/9 Ratio of boys to number of students in the classroom: 3/9 Ratio of number of students in the classroom to girls: 9/6 Ratio of number of students in the classroom to boys: 9/3 At this point you may have noticed that the order is important when defining a ratio. The number that comes after ' of ' is your numerator and the number that comes after ' to ' is your denominator. Solve math problems and then eat the mathman!
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