Napier's Bones
       for

Division








Contents
Vocabulary
bones / strips / stick
multiples of a number
References / Resources
Operations
multiply
divide
take a square root
Manipulatives
digital
big paper
smaller paper


Read Vocabulary First

      You must know Napier's Bones vocabulary and how to multiply.

      Read: Vocabulary



Division
 
Divide Two Numbers:
1st:Napier's bones will do the multiplication and division steps using multiples. The user does the subtraction steps.
2nd:Use the bones to create multiples of the divisor.
3rd:Use the largest multiple equal to or smaller than the left-most part of the dividend, the number to be divided.
4th:Divide. Multiply. Subtract. Bring Down as usual.


See division

Done step-by-step with bones.

Done with animation.



Resources

Instructions on the Operations
multiplication
division
root extraction
 
Manipulatives
Napier's Bones Digital Manipulatives
Napier's Bones big paper version
Napier's Bones small paper version digital manipulatives

      Many other manipulatives on many different topics are found at: MathTokens.Com.



References
Azzolino, Agnes "algorithm"
© 2005 at www.mathnstuff.com/math/spoken/here/1words/a/a11.htm
(last modified 2005), visited 10 April 2009.
Azzolino, Agnes "Multiplication & Division"
© 2008 at www.mathnstuff.com/math/algebra/tt15.htm#divide
visited 10 April 2009.
Azzolino, Agnes "multiple"
© 2005 at www.mathnstuff.com/math/spoken/here/1words/m/m29.htm
visited 10 April 2009.
Wikipedia®', Wikimedia Foundation, Inc.,
"Napier's bones - From Wikipedia, the free encyclopedia"
GNU Free Documentation License at http://en.wikipedia.org/wiki/Napier%27s_bones
(last modified 16 March 2009, at 20:42 (UTC) ), visited 10 April 2009.

© 2009, October 2010, A. Azzolino
www.mathnstuff.com/math/spoken/here/2class/60/nbonesd.htm
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