Chamberlain's Arithmetick being a plain and easie explanation of the most useful and necessary art of arithmetick in whole numbers and fractions, that the meanest capacity may obtain the knowledge thereof in a very short time : whereunto are added many rules and tables of interest, rebate, purchases, gaging of cask, and extraction of the square and cube roots / composed by Robert Chamberlain, accomptant and practitioner in the mathematicks.

About this Item

Title
Chamberlain's Arithmetick being a plain and easie explanation of the most useful and necessary art of arithmetick in whole numbers and fractions, that the meanest capacity may obtain the knowledge thereof in a very short time : whereunto are added many rules and tables of interest, rebate, purchases, gaging of cask, and extraction of the square and cube roots / composed by Robert Chamberlain, accomptant and practitioner in the mathematicks.
Author
Chamberlain, Robert, fl. 1678-1679.
Publication
London :: Printed for John Clark ...,
1679.
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Subject terms
Mathematics -- Early works to 1800.
Link to this Item
http://name.umdl.umich.edu/A31565.0001.001
Cite this Item
"Chamberlain's Arithmetick being a plain and easie explanation of the most useful and necessary art of arithmetick in whole numbers and fractions, that the meanest capacity may obtain the knowledge thereof in a very short time : whereunto are added many rules and tables of interest, rebate, purchases, gaging of cask, and extraction of the square and cube roots / composed by Robert Chamberlain, accomptant and practitioner in the mathematicks." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A31565.0001.001. University of Michigan Library Digital Collections. Accessed April 30, 2025.

Pages

Example.

It is required to multiply 2/6 by ⅜.

The Product of the two Denominators 6 and 8, multiplied together is 48, and the Product of the two Numerators 2 and 3 is 6, therefore the new Fraction 6/48, which by abbreviation is ⅛, is the Product of the two Fractions 2/6 and ⅜ multiplied one by another as was required.

If the given Fractions to be multiplied be mixt numbers, by the first of the 11th,

Page 186

you must first put either the whole number into his broken by reducing them into im∣proper Fractions, and then multiply Nu∣merator by Numerator, and Denominator by Denominator, their Products will give you a new Numerator and Denominator for a new Fraction, which new Fraction shall be the Product required, but this Fra∣ction will be an improper Fraction, there∣fore if you divide the Numerator by the Denominator, the Quotient gives the whole numbers, and the remainer is the Numerator, and the Divisor the Denomi∣nator of the proper Fraction, and this mixt number found shall be the true Product as before.

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