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.

Example.

It is required to subtract 7/16 from 12, here 7/16 is a fraction or broken number, and 12 is the whole number, from which whole number I take a Unit and make a Fraction of, so the number is 11 16/16, then I deduct the Fraction 7/16 from 11 16/16, taking the Numerator 7 out of the Numerator 16, and there remains 9, which I make a Numerator over the Denomina∣tor given 16, and set down 11 * 1.1 before the said Fraction as you see, So shall the difference or remainer between the two given Fractions be 11 9/16 as was required.

Thirdly, If it be required to subtract a Fraction from a mixt number, or one mixt number from another, reduce the Fractions into a common Denominator by the 7th of the 11th, and when you have so done, if the Numerator of the Fraction to be subtracted, be less than the Numerator of the Fraction from whence you subtract, then take one from the other, and the remainer is the Nu∣merator to that common Denominator, then subtract the less whole number from the greater, and that remainer with the Fracti∣on

annexed, is the difference between the two given numbers.

Notes

• * 1.1

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