Step-by-step solutions to odd-numbered problems from dozens of pre-algebra textbooks.
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Hotmath
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A helpful scientific calculator that runs in your web browser window.
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Holt Online Learning
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A selection of answers from the Dr. Math archives.
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Ask Dr. Math
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This site has a tutorial and then some examples of how to write proportions to solve for missing lengths of similar polygons
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Math.com
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Gives a list of formulas for kids to help them if they have forgotten them.
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Think Quest
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This site helps to explain the different types of tons and how to convert them.
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Metric Conversions
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Step-by-step solutions to odd-numbered problems from dozens of algebra textbooks.
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Hotmath
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A discussion of why scale matters in comparing quantities.
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Ask Dr. Math
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The easy steps behind Combined Work Rate Problems: These problems have two people (or machines) working at different rates and you need to find the combined time to finish the job.
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Prep for Tests
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