Practical and mental arithmetic on a new plan: in which mental arithmetic is combined with the use of the slate : containing a complete system for all practical purposes, being in dollars and cents

John Paine, 1841 - 284 σελίδες

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Δημοφιλή αποσπάσματα

Σελίδα 200 - But if any payment 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 199 - 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 183 - Multiply the second and third terms together, and divide their product by the first term ; the quotient will be the fourth term, or answer, in the same denomination with the third term.
Σελίδα 241 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.
Σελίδα 74 - In 3 ? In 4 ? In 5 ? In 6? In 7? In 8? In 9? In 10? In 20? In 50? In 100?
Σελίδα 246 - Subtract the cube thus found from the said period, and to the remainder bring down the next period, and call this the dividend.
Σελίδα 109 - The above process, by close inspection, will be found to consist in multiplying together the two numerators for a new numerator, and the two denominators for a new denominator.
Σελίδα 241 - Multiply the triple square by the last quotient figure, and write the product under the dividend; multiply the...
Σελίδα 113 - Divide by any number that will divide two or more of the given numbers without a remainder, and set the quotients, together with the undivided numbers, in a line beneath.
Σελίδα 174 - Bought 40 gallons of molasses, at 27 cents a gallon ; but, by accident, 4 gallons leaked out ; at what rate must I sell the remainder, per gallon, to lose nothing ? and how much to gain on the whole cost 20 per cent.

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