Math Forum - Problems Library - Pre-Algebra, Ratio and Proportion: Scale Factor

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 TOPICS This page: ratio and proportion rate scale factor Scale Factor Shrinking and expanding figures to maintain the original proportions of the shape involves understanding how to scale a figure. Besides considering how a scale factor changes the linear dimensions, these problems may also address how the perimeter or area are affected. Related Resources Interactive resources from our Math Tools project: Math 7: Ratio and Proportion The closest match in our Ask Dr. Math archives: Middle School: Ratio and Proportion NCTM Standards: Number and Operations Standard for Grades 6-8 Access to these problems requires a Membership. Designing Doorways for Rich and Riz - Suzanne Alejandre Pre-Algebra, difficulty level 2. Find the height for a doorway for Riz that gives him a proportional amount of room as Rich has in the pictured doorway. ... more>> How Wide Is My Garden? - Judy Ann Brown Pre-Algebra, difficulty level 3. A scale drawing is used to determine the width and area of a garden. ... more>> Lee's Lawn Chair - Lee & Suzanne Alejandre Pre-Algebra, difficulty level 3. Using the measurements given in the problem, determine the scale factor used to create the larger chair. ... more>> Photo Wall - Suzanne Alejandre Pre-Algebra, difficulty level 3. Find the dimensions of the large poster. ... more>> Sizing Up Sequoias - Suzanne Alejandre Pre-Algebra, difficulty level 2. Compared to a given seed weight, find out how much an average mature sequoia weighs. ... more>> Tiling Triangles - Suzanne Alejandre Pre-Algebra, difficulty level 3. Given the dimensions of a large triangle, find the dimensions of the 25 small triangles that tile it. ... more>> Page:  1