Mathematics for Common Schools: A Manual for Teachers, Including Definitions, Principles, and Rules and Solutions of the More Difficult Problems

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D.C. Heath & Company, 1900 - Arithmetic - 63 pages
 

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Page xxi - Multiply each payment by its term of credit, and divide the sum of the products by the sum of the payments ; the quotient will be the average term of credit.
Page xix - THE UNITED STATES RULE. Find the amount of the principal to the time when the payment, or sum of the payments, equals or exceeds the interest. From this amount deduct the payment or sum of the payments.
Page xxii - In any proportion the product of the means is equal to the product of the extremes.
Page viii - Multiplying or dividing both terms of a fraction by the same number does not alter the value of the fraction.
Page x - Reduce the fractions to a common denominator and divide the numerator of the dividend by the numerator of the divisor.
Page v - RULE. Divide the given number by any prime factor ; divide the quotient in the same manner, and so continue the division until the quotient is a prime number.
Page viii - A Complex Fraction is one having a fraction in its numerator, or in its denominator, or in both. A Mixed Number is a whole number and a fraction written together.
Page xi - MULTIPLICATION OF DECIMALS RULE. — Multiply as in whole numbers, and from the right of the product, point off as many decimal places as there are decimal places in both factors.
Page vii - The Value of a fraction is the quotient of the numerator divided by the denominator.

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