# Daboll's Schoolmaster's Assistant, Improved and Enlarged

S. Green, 1825 - 240 σελίδες

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### Περιεχόμενα

 ADDITION Simple 22 s for exercise 30 Alligation 50 Reduction 63
 109 Subtraction Simple 5 per cent Compound Interest for 20 years 232 12

### Δημοφιλή αποσπάσματα

Σελίδα 78 - ... from the right hand of the quotient, point off so many places for decimals, as the decimal places in the dividend exceed those in the divisor.
Σελίδα 169 - RULE. 1 . Separate the given number into periods of three figures each, by putting a point over the unit figure and every third figure bejond the place of units. 2. Find the greatest cube in the left hand period, and put its root in the quotient. 3.
Σελίδα 179 - The first term, the last term (or the extremes) and the ratio given, to find the sum of the series. RULE. Multiply the last term by the ratio, and from the product subtract the first term ; then divide the remainder by the ratio, less by l,and the quotient will be the sum of all the terms.
Σελίδα 184 - If the errors are alike, divide the difference of the products by the difference of the errors, and the quotient will be the answer. .5. If the errors are unlike, divide the sum of the products by the sum of the errors, and the quotient will bo the answer.
Σελίδα 206 - Ixos being given, to find how many bushels it will contain. RULE. Multiply the length by the breadth, and that product by the depth, divide the last product by 2150,425 the solid inches in a statute bushel, and the quotient will be the answer. EXAMPLE. There is a square...
Σελίδα 186 - To find the number of Permutations or changes, that can be made of any given number of things, all different from each other RULE.
Σελίδα 119 - Cast the interest on the several payments, from the time they were paid, to the time of settlement, and find their amount ; and lastly deduct the amount of the several payments, from the amount of the principal.
Σελίδα 145 - CASE II. , To reduce a mixed number to its equivalent improper fraction. RULE. Multiply the whole number...
Σελίδα 161 - COMPUTE the interest on the principal sum, from the time when the interest commenced to the first time when a payment was made, which exceeds either alone or in conjunction with the preceding payments (if any) the interest at that time due: add that interest to the principal, and from the sum subtract the payment made at that time, together with the preceding payments (if any) and the remainder forms a new principal ; on which, compute and subtract the interest, as upon the first principal: and proceed...
Σελίδα 172 - Alligation alternate is the method of finding what quantity of any number of simples, whose rates are given, will compose a mixture of a given rate ; so that it is the reverse of Alligation medial, and may be proved by it. RULE 1.* 1. Write the rates of the simples in a column under each other.