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" Multiply the whole number by the numerator of the fraction, and divide the product by the denominator ; or divide the whole number by the denominator of the fraction, and multiply the quotient by the numerator. "
Easy Introduction to Mathematics - Σελίδα 307
των Charles Butler - 1814
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Practical Arithmetic: Embracing the Science and Applications of Numbers

Charles Davies - 1863 - 346 σελίδες
...the denominator of the fraction, and multiply the quotient by the numerator: Or, Multiply the whole number by the numerator of the fraction, and divide, the product by the denominator. Examples. 1. Multiply 24 by |. 2. Multiply 42 by }£. 3. Multiply 105 by f 4. Multiply 64 by -£f....

The Practical Model Calculator, for the Engineer, Mechanic, Machinist ...

Oliver Byrne - 1863 - 600 σελίδες
...be the root required. But if it be a compound root, or one that consists both of a root and a power, multiply the logarithm of the given number by the numerator of the index, and divide the product by the denominator, for the logarithm of the root sought. Observing,...

The young dual arithmetician; or, Dual arithmetic

Oliver Byrne - 1866 - 252 σελίδες
...natural number answering to the result will be the root required. If the root be expressed by a fraction, multiply the logarithm of the given number by the numerator of the index, and divide the product by the denominator, for the logarithm of the root so expressed. EXAMPLES....

Intermediate Arithmetic: For Use in the Common Schools and Academies of the ...

Paul Allen Towne - 1867 - 240 σελίδες
...denominator of the fraction without a remainder, it is often more convenient first to multiply the whole number by the numerator of the fraction, and divide the product by the denominator. Thus: 3 times 16 are 48, and б in 48, 9| times. 6. Find the value of 12x|; 15xf; 25xT75; 39x37e; 42...

A Practical Arithmetic

George Payn Quackenbos - 1869 - 348 σελίδες
...14 cwt. 3 qr. 15 Ib. 18. Find|of20bu. 3pk. 7qt. Ipt. AIM. llbu. 2pk. 5qt. Jpt. Multiply the compound number by the numerator of the fraction, and divide the product by its denominator. 19. Find -ft of 3ft 18gr. Am. lib 2§ 63 23 2}?gr. 20. Find \\ of 7guin. 10s. 6d....

An Elementary Arithmetic

Daniel Barnard Hagar - 1871 - 220 σελίδες
...ft, or find If of .75. 213. Rules for Multiplying an Integer by a Fraction.— Multiply the integer by the numerator of the fraction, and divide the product by the denominator. Or, Divide the integer by the denominator of the fraction, and multiply the quotient by the numerator. PROBLEMS. 214....

Introduction to the National Arithmetic on the Inductive System: Combining ...

Benjamin Greenleaf - 1871 - 350 σελίδες
...can be done without a remainder, and multiply the quotient by the numerator. Or, , Multiply the whole number by the numerator of the fraction, and divide the product by the denominator. EXAMPLES FOR PRACTICE. 2. Multiply 36 by J. Ans. 28. 3. Multiply 144 by |£. Ans. 88. 4. Multiply 375...

The Principles of Arithmetic ...

Joseph Ray - 1856 - 400 σελίδες
...write the numerator, (Art. 115). II. To MULTIPLY A AVuoLE NUMBER BY A FRACTION. — Multiply the whole number by the numerator of the fraction, and divide the product by the denominator. REMARKS. — 1. After indicating the operations, if the numerator and denominator contain common factors,...

Elementary arithmetic. [With] Answers, Βιβλίο 1

H T. Sortwell - 1873 - 176 σελίδες
...21^ off To find the value of a fraction of a given quantity — Step I. Multiply the given quantity by the numerator of the fraction, and divide the product by the denominator. Example. Find the value of £ of £1. £1 We here multiply the given quantity, „ namely, £1, by...

An elementary course of arithmetic. (With Key).

Richard Rickard - 1873 - 364 σελίδες
...36d. = 3s. Or thus-f of 5s. 3d. = (5s-3d-)X4 = 21S- = 3S. no. K uk.— Multiply the given quantity by the numerator of the fraction, and divide the product by the denominator ; reduce the remainder (if any) to the next lower denomination, and divide as before. If the given...




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