Visualize equivalent ratios
▶ Ratios with tape diagrams (part:whole)
Find the ratio of open-ended to multiple-choice questions. If the ratio is 5:4, it means for every 5 open-ended questions, there are 4 multiple-choice questions. The video then shows how to use this ratio to complete a table with missing values for multiple-choice and total questions.Read a part-to-whole ratio from a tape diagram showing the ratio of the two parts. Then scale up to generate sets of values that the diagram might represent.
▶ Simplify a ratio from a tape diagram
In this problem, we have a mixture of yellow and red paint. There are 12 parts yellow and 8 parts red. We want to find the ratio of red paint to the total paint in the mixture. To do this, we add the parts of red and yellow paint together (8 + 12 = 20). The ratio of red paint to total paint is 8:20.
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