McGraw-Hill Mathematics: Grade 3, Chapter 3

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Cypress Subtraction

Cypress: Florida’s Majestic and Beneficial Wetlands Tree
http://www.sfrc.ufl.edu/Extension/pubtxt/cir1186.htm

Take a trip through this Web site about Florida Cypress trees. Hunt for the data you need to solve subtraction problems! Write a subtraction sentence and find each answer.

• Read the first part, Cypress in Florida.
• Then scroll down and click the first picture. Go back. Read about the picture and answer Exercise 1 below.
• Scroll to Big Cypress Swamp and answer Exercise 2.
• Scroll to Corkscrew Swamp Sanctuary and answer 3 and 4.
• Scroll to The Florida State Champion Cypress Tree and answer 5.
• Scroll down to History of Cypress Swamps in Florida and click Figure 8, Tidewater Red Cypress. Answer 6.
• Click the Back arrow. Read the paragraph about Early Harvests. Complete 7.

1. Size and Shape
   The bald cypress tree is            feet tall.
   How much taller is that than a 30-foot elm tree?
   
                                                                                             
   
   
2. South Florida: Big Cypress Swamp
   Big Cypress Preserve has 700,000 acres.
   Collier-Seminole State Park has            acres.
   How much larger is Big Cypress preserve?
   
                                                                                             
   
   
3. South Florida: Corkscrew Swamp Sanctuary
   Corkscrew Swamp Sanctuary has a             -foot boardwalk.
   Fakahatchie has a shorter boardwalk of              feet.
   If workers added 423 feet to the Fakahatchie boardwalk, how much shorter would it be than the Corkscrew boardwalk?
   
                                                                                             
   
   
4. Corkscrew Swamp has some trees over            years old.
   How much older than 62-year old grandpa is that?
   
                                                                                             
   
   
5. Central Florida: The Florida State Champion Cypress Tree
   How many more points does the national champion cypress tree score than the Florida champion?
   
                                                                                             
   
   
6. History of Cypress Swamps in Florida: Figure 8
   What is the difference between the height and the distance around the trunk of this Tidewater Red Cypress tree?
   
                                                                                             
   
   
7. History of Cypress Swamps in Florida: Early Harvests
   There have been reports of cypress shingles lasting            years.
   How much longer is that than shingles on a modern house that last 32 years?
   
                                                                                             
   
   

Math at Home

Today I explored a Web site that provided pictures and information about Florida's cypress trees. I learned that a cypress tree can be           feet tall. This is about           feet taller than I am!

You can find out more about this topic by asking your teacher or parents to show you other Web sites.