The Constructive arithmetic

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Página 378 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Página 53 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Página 379 - IN right angled triangles, the rectilineal figure described upon the side opposite to the right angle, is equal to the similar and similarly described figures upon the sides containing the right angle...
Página 95 - Once, Twice, Three times, Four times, Five times, Six times, Seven times...
Página 144 - In a proportion the antecedents and consequents of the two ratios are respectively the antecedents and consequents of the proportion. The first and fourth terms are called the extremes, and the second and third the means.
Página 158 - A post is i in the mud, ^ in the water, and 10 feet above the water : what is the whole length of the post ? Ans. 24 feet. 28.
Página 161 - When a decimal number is to be divided by 10, 100, 1000, &c., remove the decimal point as many places to the left as there are ciphers in the divisor, and if there be not figures enough in the number, prefix ciphers.
Página 160 - Any quantity may be transposed from one side of an equation to the other, if, at the same time, its sign, be changed.
Página 160 - B $300, and C $100. Prob. 12. Divide the number a into three such parts that the second may be m times as great as the first, and the third n times as great as the second.
Página 132 - Multiplying or dividing both terms of a fraction by the same number does not alter the value of the fraction.

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