Unit 9 Assignments for Prob/Stat/Discrete - Consumer Math and Financial Management - Chapter 8

Sep 19, 2026

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Unit 9 assignments and guided notes cover Consumer Mathematics and Financial Management, focusing on percentages, sales tax, discounts, income tax, and percent change. The material includes daily worksheet references, practice test and project deadlines, and reminders for getting help before due dates. Instruction explains how to convert fractions and decimals to percents and vice versa, compute tax and discount amounts using rate formulas, and determine percent increases or decreases. It also introduces calculating income tax using marginal tax rate tables and begins guided notes for simple interest.

LanguageEnglish

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Pages35

Reading Time12 min

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Unit 9 Assignments

Percent, Sales Tax, and Income Tax

Basics of Percent

Percent, Sales Tax, & Discounts

Percent and Income Tax

Percent and Change

Abuses of Percents

Section 9.2: Simple Interest

Unit 9 Assignments for Prob/Stat/Discrete Chapter 8: Consumer Math and Financial Management | Day | Date | Assignment (Due the next class meeting) | | --- | --- | --- | | | | 9.1 Worksheet | | | | 9.2 Worksheet | | | | 9.3 Worksheet | | | | 9.4 Worksheet | | | | 9.5 Worksheet | | | | 9.6 Worksheet | | | | Unit 9 Project Work day | | | | Unit 9 Practice Test | | | | Unit 9 Test Unit 9 Project DUE!!! | NOTE: You should be prepared for daily quizzes. HW reminders: ➢ If you cannot solve a problem, get help before the assignment is due. ➢ Help is available before school, during lunch, [or during IC and at ](or during IC and at mathguy.us)[mathguy.us](or during IC and at mathguy.us)[ ](or during IC and at mathguy.us)➢ For extra practice, [visit](visit www.interactmath.com)[ ](visit www.interactmath.com)[www.interactmath.com](visit www.interactmath.com) Discrete Math Chapter 8 Guided Notes: Consumer Mathematics Section 9. 1: Percent, Sales Tax, and Income Tax Objectives: 1. Express a fraction as a percent. 2. Express a decimal as a percent. 3. Express a percent as a decimal. 4. Solve applied problems involving sales tax and discounts. 5. Compute income tax. 6. Determine percent increase or decrease. 7. Investigate some of the ways percent can be abused. Basics of Percent • are the result of expressing numbers as a part of 100. • The word percent means per hundred. Expressing a fraction as a percent: 1. the numerator by the denominator. 2. the quotient by 100. This is done by moving the decimal point in the quotient two places to the right. 3. Add a percent sign. Expressing a Fraction as a Percent: Example: Express 58 as a percent. Solution: Step 1. Divide the numerator by the denominator. Step 2. Multiply the quotient by 100. Step 3. Add a percent sign. Expressing a Decimal as a Percent To express a decimal as a percent: • Move the decimal point places to the right. • Attach a percent sign. Example: Express 0.47 as a percent. Solution: Thus, 0.47 = 47% . Expressing a Percent as a Decimal Number To express a percent as a decimal number: 1. Move the decimal point two places to the left. 2. Remove the percent sign. Example: Express each percent as a decimal: a. 19% b. ¼% Solution: Use the two steps. a. b. We change the fraction into a decimal, then use the steps Percent, Sales Tax, & Discounts Many applications involving percent are based on the following formula: Note that “of” implies multiplication. • We use this formula to determine collected by states, counties, cities on sales items to customers. Sales tax amount = tax rate x item’s cost Example: Suppose that the local sales tax rate is 7.5% and you purchase a bicycle for $394. a. How much tax is paid? b. What is the bicycle’s total cost? Percent and Sales Price • Businesses reduce prices, or , to attract customers and to reduce inventory. • The rate is a percent of the original price. Discount price = discount rate x original price. Example: A computer with an original price of $1460 is on sale at 15% off. a. What is the discount amount? b. What is the computer’s sale price? Percent and Income Tax Calculating Income Tax: 1. Determine your : 2. Determine your : 3. Determine the : • The table shows tax rates, standard deductions, and exceptions for the four filing status categories. Example: Calculate the income tax owed by a single woman with no dependents whose gross income, adjustments, deductions, and credits are given. Use the marginal tax rates from the table. Single Women with no dependents: Gross income: $52,000 Adjustments: $4,000 Tax credit: $500 Deductions: • $7500: mortgage interest • $2200: property taxes • $2400: charitable contributions • $1500: medical expenses not covered the insurance • Solution: • Step 1. Determine the adjusted gross income. • Step 2. Determine taxable inc

FAQs

How do you convert a fraction to a percent?

Divide the numerator by the denominator, then multiply the quotient by 100, and add a percent sign.

How is sales tax calculated using a percent rate?

Sales tax amount equals the tax rate multiplied by the item’s cost; “of” indicates multiplication.

What steps are used to calculate income tax in the notes?

First determine adjusted gross income, then taxable income, and then the income tax using marginal tax rates and the provided table.

Sep 19, 2026

Upload by Graffin