There are two basic ways to do fractions on your iPhone calculator. Here's what you need to know to use the built-in app.
Dividing into a given ratio. You can use bar models to divide amounts in a given ratio. For example, Isabel and Geraint share their savings of £96 in the ratio 5 to 3. How much money does each person ...
In this video Praxis the robot and Alan the "human man" present their animated guide to the development of fractions.
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