Buker-Felter Arithmetics, Βιβλίο 3,Μέρη 1-2

Silver, Burdett & Company, 1915

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Δημοφιλή αποσπάσματα

Σελίδα 18 - An integer is divisible by 3 if the sum of its digits is divisible by 3. An integer is divisible by 9 if the sum of its digits is divisible by 9.
Σελίδα 253 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Σελίδα 100 - ... inches in length and girth combined, nor in form or kind likely to injure the person of any postal employee or damage the mail equipment or other mail matter and not of a character perishable within a period reasonably required for transportation and deliyery.
Σελίδα 371 - Find the amount of each payment from the time it was made to the time of settlement. III. Subtract the sum of the amounts of the payments from the amount of the principal, and the remainder will be the sum due.
Σελίδα 329 - The square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
Σελίδα 322 - Which proves that the square of a number composed of tens and units contains, the square of the tens plus twice the product of the tens by the units, plus the square of the units.

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