Johnsons arithmetick in two bookes: [microform] the first of vulgar arithmetick with easie rules to worke all the first four parts of arithmetick, in whole numbers and fractions. The second of decimall arithmetick, whereby all fractionall operations are wrought in whole number, in merchants accompts, without reduction, with the perfect working of interests and annuities. By John Johnson surveyer, and practicioner in the mathematicks

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