7.13

Math7th Grade

Knowledge and Skills Statement (Standard Cluster)

The student applies mathematical process standards to develop an economic way of thinking and problem solving useful in one's life as a knowledgeable consumer and investor

Texas Essential Knowledge and Skills for Mathematics

Cluster contents

Student Expectations in This Statement

7.13 is a knowledge and skills statement. These are the student expectations under it.

Teacher's field guide

What This Cluster Means

What Students Need to Do

Students use rates, percentages, and tables to calculate taxes, discounts, rebates, interest, and budget shares. They organize income, savings, expenses, assets, and debts to find net worth and judge whether a household budget works. They compare financial choices and support decisions with calculations.

What Mastery Looks Like

Students accurately calculate taxes, discounts, rebates, budget percentages, interest earnings, and net worth from given information. They can organize a budget and explain whether income covers fixed expenses, variable expenses, taxes, and savings. They can compare financial options using calculations rather than price claims alone.

Common Misconceptions

Students may add a tax rate as a dollar amount instead of multiplying by the price or wages. They often treat coupons and rebates as identical, confuse assets with income, or reverse assets and liabilities when finding net worth. They may also expect simple and compound interest to produce the same earnings.

How to Assess It

Give this exit ticket: A $60 item has 8% sales tax and a $10 rebate. Find the final cost, then name whether the rebate applies before or after purchase.

Lesson moves

Ways to Teach It

  1. Give pairs mock paychecks, bills, and savings cards, then have them build a monthly budget and calculate each category's percentage.

  2. Ask students to write which expense they would reduce when a budget exceeds income, then defend the choice with numbers.

  3. Run a coupon challenge where teams calculate final prices for items with sales, coupons, rebates, and sales tax.

  4. Use a local family budget calculator to find needed hourly wages, then compare results for two nearby cities.

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Related Standards

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