A Practical Treatise on Arithmetic: Wherein Every Principle Taught is Explained in a Simple and Obvious Manner ... To which is Added Two Methods of Book-keeping, with Examples for Exercise
Otis, Broaders, and Company, 1843
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Σελίδα 155 - Compute the interest to the time of the first payment ; if that be one year or more from the time the interest commenced, add it to the principal, and deduct the payment from the sum total. If there be after payments made, compute the interest on the balance due to the next payment, and then deduct the payment as above; and in like manner from one payment to another, till all the payments are absorbed; provided the time between one payment and another be one year or more.
Σελίδα 155 - But if any payments be made before one year's interest hath accrued, then compute the interest on the principal sum due on the obligation, for one year, add- it to the principal, and compute the interest on the sum paid, from the time it was paid up to the end of the year; add it to the sum paid, and deduct that sum from the principal and interest, added as above...
Σελίδα 74 - To multiply a fraction by a whole number, or a whole number by a fraction, — Divide the denominator by the whole number, when it can be done without a remainder ; otherwise, multiply the numerator by it, and under the product write the denominator, which may then be reduced to a whole or mixed number.
Σελίδα 64 - To reduce a mixed number to an improper fraction. Multiply the whole number by the denominator of the fraction, and to the product add the given numerator.
Σελίδα 207 - The area of a triangle is equal to half the product of its base by its altitude.