# Illustrative Mathematics Grade 7, Unit 5, Lesson 17: The Stock Market

Learning Targets:

• I can solve problems about the stock market using rational numbers and percentages.

Related Pages
Illustrative Math

#### Lesson 17: The Stock Market

Let’s learn about the Stock Market.

Illustrative Math Unit 7.5, Lesson 17 (printable worksheets)

#### Lesson 17.1 Revisiting Interest and Depreciation

1. Lin deposited \$300 in a savings account that has a 2% interest rate per year. How much is in her account after 1 year? After 2 years?
2. Diego wants to sell his bicycle. It cost \$150 when he bought it but has depreciated by 15%. How much should he sell it for?

#### Lesson 17.2 Gains and Losses

1. Here is some information from the stock market in September 2016. Complete the table.
2. Which company’s change in dollars had the largest magnitude?
3. Which company’s change in percentage had the largest magnitude?

#### Lesson 17.3 What is a Stock Portfolio?

A person who wants to make money by investing in the stock market usually buys a portfolio, or a collection of different stocks. That way, if one of the stocks decreases in value, they won’t lose all of their money at once.

1. Here is an example of someone’s stock portfolio. Complete the table to show the total value of each investment.
2. Here is the same portfolio the next year. Complete the table to show the new total value of each investment.
3. Did the entire portfolio increase or decrease in value over the year?

#### Lesson 17.4 Your Own Stock Portfolio

Your teacher will give you a list of stocks.

1. Select a combination of stocks with a total value close to, but no more than, \$100.
2. Using the new list, how did the total value of your selected stocks change?

The Open Up Resources math curriculum is free to download from the Open Up Resources website and is also available from Illustrative Mathematics.

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