Number+and+Computation+-+4

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 * Rainbow Multiplication**

http://www.mathcats.com/explore/reallybignumbers.html
 * Big Numbers** (Can you say really big numbers?)

http://www.crickweb.co.uk/assets/resources/flash.php?&file=ncmenu
 * Compare Numbers**

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 * Estimate** (Whole numbers to 10,000, tenths, and hundredths)

http://www.wmnet.org.uk/resources/gordon/Function%20wheel%20v6.swf
 * Function Wheel** (Provides varied math practice)

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 * Number Theory** (Rags to Riches)

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 * Table Tester** (Multiplication Fact Practice)

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 * Base Ten Blocks**

[|http://www.netrover.com/~kingskid/MulTab/Applet.html]
 * Visual Multiplication Game** (A nice demonstration for showing arrays on a multiplication table.)

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 * Decimal Comparisons**