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" 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. "
A Complete Arithmetic: Oral and Written ; Part First-second - Σελίδα 79
των Malcolm MacVicar - 1878
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An Elementary Arithmetic ...: Serving as an Introduction to the Higher ...

George Roberts Perkins - 1846 - 266 σελίδες
...688.1875. 36. A decimal number maybe multiplied by 10, 100, 1000, &c., by removing the decimal point as many places to the right as there are ciphers in the multiplier ; and if there are not so many figures, make up the deficiency by annexing ciphers. 121.2 1212. 12120....

The United States Arithmetic: Designed for Academies and Schools

William Vogdes - 1847 - 324 σελίδες
...deficiency by prefixing ciphers. 3. To multiply by 10, 100, 1000, &c., we only have to remove the point as many places to the right, as there are ciphers in the multiplier. The reason of pointing off as many decimal places in the product, as there are in both factors, is...

Putnam's Arithmetic

Rufus Putnam - 1849 - 276 σελίδες
...performed by simply annexing the naughts to the right of the multiplicand ; or, in decimals, by removing the decimal point in the multiplicand as many places to the right as there are naughts in the multiplier. The reason for this is, that by removing the decimal point one place to...

An Elemtary Arithmetic ...: Serving as an Introduction to the Higher ...

George Roberts Perkins - 1849 - 346 σελίδες
...688-1875. S3 • A decimal number may be multiplied by 10, 100, 1000, &c., by removing the decimal point as many places to the right as there .are ciphers in the multiplier; and if there are not so many figures, make up the deficiency by annexing ciphers. Thus, 12- 12 multiplied...

The American Common-school Arithmetic: In which the Principles of the ...

Rufus Putnam - 1850 - 274 σελίδες
...by simply annexing the -naughts to the right of the multiplicand ; or, in decimals, by removing ihe decimal point in the multiplicand as many places to the right as there are naughts in the multiplier. The reason for this is, that by removing the decimal point one place to...

An Elementary Arithmetic Serving as an Introduction to the Higher Arithmetic

George Roberts Perkins - 1850 - 364 σελίδες
...688-1875. 53. A decimal number may be multiplied by 10, 100, 1000, &c., by removing the decimal point as many places to the right as there are ciphers in the multiplier ; and if there are not so many figures, make up the deficiency by annexing ciphers. 10 If 121-2. 100...

An Elementary Arithmetic Designed for Academies and Schools: Also Serving as ...

George Roberts Perkins - 1851 - 356 σελίδες
...688-1875. 53. A decimal number may be multiplied by 10, 100, 1000* &c., by removing the decimal point as many places to the right as there are ciphers in the multiplier ; and if there are not so many figures, make up the deficiency by annexing ciphers. Thus, 12-12 multiplied...

The practice and theory of arithmetic

William Frederick Greenfield - 1853 - 228 σελίδες
...must be completed by adding ciphers to the numerator (Prop. 10). Hence the Rule: remove the decimal as many places to the right as there are ciphers in the multiplier, supplying ciphers if necessary on the right. Prop. 40. — To prove the Rule for Division of a Decimal,...

A Practical and Theoretical Arithmetic: Designed for the Use of Schools and ...

Charles D. Lawrence - 1854 - 336 σελίδες
...thousand. Ans. 2304. *9. To multiply a decimal fraction by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier. The product of 0.2457 by 100 is 24.57. The product of 27.8056 by 1000 is 27805.6. Multiply the fi1-st...

A New Practical and Theoretical Arithmetic: In Which, in Addition to the ...

Horatio Nelson Robinson - 1854 - 306 σελίδες
...quills cost ? Ans. $1,80. Tu multiply decimals by 10, 100, 1000, 4-c., remove the decimal pnint us many places to the right as there are ciphers in the multiplier, agreeably to Article 13. Removing the decimal point one figure to the right increases every figure...




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