In this video, Salman Khan of Khan Academy explains growth by percentages.
Khan Academy
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In this video, Salman Khan of Khan Academy demonstrates ordering numeric expressions.
Khan Academy
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In this video, Salman Khan of Khan Academy gives an introduction to percent and decimals.
Khan Academy
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Great site to use to get a scientific calculator to solve or check your problems you are working on. Larger and easy to use.
Scientific Calculator
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Interest rates, compound interest, money
Math is Fun
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A functional scientific calculator with the look and feel of a real calculator for teaching how to use a calculator over the web.
Calculator.com
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This page explains ratios and shows in detail the different ways that ratios can be written and used. Several examples are shown and a link is included where students can work on a practice problem.
Math Is Fun
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In this video, Salman Khan of Khan Academy solves more percent problems.
Khan Academy
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