Ratios

Today in class we learned about ratios. A ratio is a comparison between two quantities. You can compare numbers, side lengths, fruits to vegetables, you name it. Bottom line is that if it compares to quantities, its a ratio. An example of a ratio would be if you had five bananas and three apples, it would be a five to three ration or 5:3. You can also put ratios in fraction or decimal form. if you were comparing the numbers 7.3 and 9, you could write it as 7.3/9. Also, you can put that fraction into a decimal. 7.3/9 as a decimal is .81. sometimes you can't tell if a ratio is similar with another ratio unless you put it in decimal form. It's hard to tell if the ratios 11/13.5 and 18.3/22.5 are similar just by looking at them but if you put them into decimals they both equal .81.

by Quillen Bradlee