A Description of the Visible Numerator: With Instructions for Its Use ... Designed to Impart to Learners a Clear and an Adequate Knowledge of the Principles of Arithmetic, and to Accompany the Apparatus
T. R. Marvin, printer, 1832 - 95 páginas
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Página 73 - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Página 20 - In any proportion, the product of the means is equal to the product of the extremes.
Página 57 - By division we ascertain how often one number is contained in another. The number to be divided is called the dividend. The number to divide by is called the divisor. The number of times the dividend contains the divisor is called the quotient.
Página 26 - That is, ten units make one ten, ten tens make one hundred, ten hundreds make one thousand, and so on.
Página 86 - Point off the given number into periods of two figures each, by putting a dot over the units, another over the hundreds, and so on. These dots show the number of figures of which the root will consist.
Página 19 - In general, when we have occasion to consider quantities less than unity, we suppose unity divided into a certain number of parts, sufficiently small to be contained a certain number...
Página 25 - ... tens; the third, hund-reds; the fourth, thousands; the fifth, tens of thousands ; the sixth, hundreds of thousands; the seventh, millions, etc.
Página 20 - That is — If the first be to the second as the third is to the fourth : the first and second together are to the second as the third and fourth together are to the fourth.
Página 81 - To find the interest of any sum in federal money, at 6 per cent., it is only necessary to multiply the principal by the interest of $ 1 for the given time, found as above directed, and written as a decimal fraction, remembering to point off as many places for decimals in the product as there are decimal places in both the factors counted together.