### Examples

*Example:*23% of the junior population are taking an art class this year. What is the ratio of juniors taking an art class to juniors not taking an art class?

*Example: *The ratio of boys to girls in a class is 3:2. What percentage of the students are boys in the class?

### Clarifications

*Clarification 1:*Instruction includes discounts, markups, simple interest, tax, tips, fees, percent increase, percent decrease and percent error.

**Subject Area:**Mathematics (B.E.S.T.)

**Grade:**7

**Strand:**Algebraic Reasoning

**Date Adopted or Revised:**08/20

**Status:**State Board Approved

## Related Courses

## Related Access Points

## Related Resources

## Educational Game

## Formative Assessments

## Lesson Plans

## Original Student Tutorials

## Perspectives Video: Professional/Enthusiast

## Perspectives Video: Teaching Idea

## Teaching Ideas

## Tutorial

## STEM Lessons - Model Eliciting Activity

In this activity, students will engage critically with nutritional information and macronutrient content of several fast food meals. This is an MEA that requires students to build on prior knowledge of nutrition and working with percentages.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.

In this Model Eliciting Activity, MEA, students will work in cooperative groups to discuss and come up with a procedure to rank the banks from best to worst by estimating the simple interest and total loan amount.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.

## MFAS Formative Assessments

Students are given gasoline prices from a year ago and today and are asked to calculate the percent change.

Students are asked to calculate the amount of sales tax and total price, given prices of individual items to purchase.

## Original Student Tutorials Mathematics - Grades 6-8

Follow Hailey and Kenna as they estimate tips and sales tax at the mall, restaurants, and the hair salon in this interactive tutorial.

Let's calculate markups and markdowns at the mall and follow Paige and Miriam working in this interactive tutorial.

Calculate simple interest and estimate monthly payments alongside a loan officer named Jordan in this interactive tutorial.

Explore sales tax, fees, and commission by following a customer service representative named Julian in this interactive tutorial.

Learn to solve percent change problems involving percent increases and decreases in in this interactive tutorial.

## Student Resources

## Original Student Tutorials

Follow Hailey and Kenna as they estimate tips and sales tax at the mall, restaurants, and the hair salon in this interactive tutorial.

Type: Original Student Tutorial

Let's calculate markups and markdowns at the mall and follow Paige and Miriam working in this interactive tutorial.

Type: Original Student Tutorial

Calculate simple interest and estimate monthly payments alongside a loan officer named Jordan in this interactive tutorial.

Type: Original Student Tutorial

Explore sales tax, fees, and commission by following a customer service representative named Julian in this interactive tutorial.

Type: Original Student Tutorial

Learn to solve percent change problems involving percent increases and decreases in in this interactive tutorial.

Type: Original Student Tutorial

## Educational Game

In this activity, students are quizzed on their ability to estimate sums, products, and percentages. The student can adjust the difficulty of the problems and how close they have to be to the actual answer. This activity allows students to practice estimating addition, multiplication, or percentages of large numbers. This activity includes supplemental materials, including background information about the topics covered, a description of how to use the application, and exploration questions for use with the java applet.

Type: Educational Game

## Tutorial

Learn how to find the full price when you know the discount price in this percent word problem.

Type: Tutorial