Unit 9

Applied Mathematics Upgrades
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Unit 9--Using Ratios and Proportions 
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   C.O.R.D.® Objectives

 


1.  Read and interpret ratios. 
2.  Compare ratios.

3.  Recognize and write proportions from given information.
4.  Distinguish between direct and indirect relationships.
5.  Solve proportions in practical, work-related problems.

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1/ 2.  Read and interpret ratios./Compare ratios.

 

During the 20th Century.... .................................................................... 01*

On Monday through Thursday, Andrew worked .... ......................... 02*
SHAQ #1:  A copier prints 10 pages per minute.  .............................. 03

 
   

3.  Recognize and write proportions from given information.

 

Write a proportion that could be used.... ............................................ 04*

Write a proportion that could be used.... ............................................ 05*

          Bonus:  SHAQ made from pages 04 and 05, above.

 
   

4.  Distinguish between direct and indirect relationships.

 

If the ratio of a to x is 3 to 4.... ............................................................... 06*

Column A/Column B Questions ........................................................... 07*

Riddle:  What Will Five Tons of Coal At $15 A Ton...? ................... 08

 
 
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5.  Solve proportions in practical, work-related problems.

 

Riddle:  Why Is A Goose Like An Elephant's Trunk? ..................... 08

Riddle:  This Electric Device Was Patented in 1876. ....................... 09
The Ratio of Males To Females At The Atlanta Art Institute.... ... 10*
Investigating The Age Of The Earth
       The Age of The Earth ....................................................................... 11*

       Investigating the Statue of Ramses II ........................................... 12

       Ozymandias, a Poem by Shelley ..................................................... 13*

       Is Ramses II the Pharoah of Exodus? ............................................ 14*

       Solution:  Assuming there was a time.... ...................................... 15*

       Solution:  Calculations and Notes ................................................. 16
The Rock Hill High School Graduation Mystery .............................. 17

Shark Attack! ................................................................................... 18 - 19

A Car Is Traveling At 60 mph, .... ......................................................... 20*

SHAQ #2:   A commercial jet usually averages 550 mph.... ............. 21 

You Need To Fill A Basin With Water.... ............................................ 22*

 
   

Answer Key ............................................................................................ 23-24

   
   

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