The Teachers' Assistant, Or, A System of Practical Arithmetic: Wherein the Several Rules of that Useful Science are Illustrated by a Variety of Examples, a Large Proportion of which are in Federal Money : the Whole Designed to Abridge the Labour of Teachers, and to Facilitate the Instruction of Youth

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Benjamin Warner, 1817 - 198 sider
 

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Side 147 - RULE. Divide as in whole numbers, and from the right hand of the quotient point off as many places for decimals as the decimal places in the dividend exceed those in the divisor.
Side 131 - Operations with Fractions A) To change a mixed number to an improper fraction, simply multiply the whole number by the denominator of the fraction and add the numerator.
Side 132 - RULE. Multiply all the numerators together for a new numerator, and all the denominators for a new denominator: then reduce the new fraction to its lowest terms.
Side 172 - Divide the difference of the extremes by the number of terms, less 1, and the quotient will be the common difference.
Side 163 - Bring down the first figure of the next period to the remainder for a new dividend, to which find a new divisor as before, and in like manner proceed till the whole be finished.
Side 74 - Set that term of the supposition which is ol the same name or kind with the term of demand, in the first place, set the other term of supposition in the second place, and the term of demand in the third place.
Side 169 - Suppose two numbers, and work with each agreeably to the tenor of the question, noting the errors of the results : multiply the errors of each operation into the supposed number of the other ; then, If the errors be alike, i.
Side 12 - Ans. 90. 5. A merchant bought of one person 50 barrels of flour for 300 dollars ; of another person, 75 barrels for 525 dollars ; and of another person, 125 barrels for 1000 dollars.
Side 171 - Multiply the number of terms, less 1, by the common difference, and to the product add the first term, the sum is the last term.

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