Decimals made easie : containing I. An explanation of fractions in general ..., II. Reduction, addition, substraction, multiplication, division, and rule of proportion in decimals ..., III. The reason why decimals are wrought as whole numbers, IV. The excellency of whole fractions .., V. The particular use thereof in compuing the interest (simple or compound, or discompt) of money ..., VI. The most easie method of extracting the square and cube-roots of numbers ... /