Lesson 16

Finding the Percentage

Lesson Narrative

While students have found percentages with easy numbers before now, in this lesson they will develop a general structure (MP7) that will work for any numbers.

Learning Goals

Teacher Facing

• Critique or justify (orally) statements about percentages and equivalent numerical expressions.
• Generalize a process for finding the percentage that C is of B and justify (orally) why this can be abstracted as $\frac{C}{B} \boldcdot 100$.

Student Facing

Let’s find percentages in general.

Student Facing

• I can solve different problems like “60 is what percentage of 40?” by dividing and multiplying.

Addressing

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