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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. "
Ray's Elementary Arithmetic: Embracing Mental and Written Exercises, for ... - Σελίδα 179
των Joseph Ray - 1879 - 192 σελίδες
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The popular educator

Popular educator - 1767
...in Lesson XII., that to multiply a decimal by any power of 10, we need only move the decimal point as many places to the right as there are ciphers in the multiplier. For example : — •31567 x 100 is 31-567. For -34567 x 100 •= AVoVs x 100 = Vu'jV = 34-567. Similarly,...

A Course of Mathematics ...: Designed for the Use of the Officers ..., Τόμος 1

Isaac Dalby - 1807
...Product 6420-000. Therefore multiplying by 10, 100, 1000, &c. is only removing the decimal point so many places to the right as there are ciphers in the multiplier. Thus S2-1 multiplied by 10 is SJ I ; 4 '4 multiplied by 1000 is 4400, &c. 64. There is a method of...

An Easy Introduction to the Mathematics: In which the Theory and ..., Τόμος 1

Charles Butler - 1814
...multiplier is a whole number, consisting of an unit with ciphers subjoined. RULE. Remove the decimal mark as many places to the right as there are ciphers in the multiplier '. 9. Multiply 123.456Г by 10. Prod. 1234.567. 10. Multiply .98765 by 100. Prod. 98.765. 11. Multiply...

The Elements of Arithmetic

Augustus De Morgan - 1830 - 136 σελίδες
...following rule:—To multiply a decimal fraction by a decimal number (106), move the decimal point as many places to the right as there are ciphers in the decimal number. When this cannot be done, add ciphers to the right of the decimal (116) until it can....

Conkling's Arithmetic: The Young Arithmetician's Guide to a Knowledge of ...

Thomas Conkling (W.) - 1831 - 275 σελίδες
...number equal. NoTE — To multiply decimals by 10, 100, 1000, &c. remove the point in multiplicand so many places to the right, as there are ciphers in the multiplier. EXAMPLE FOR ILLUSTRATION. 1. Multiply 3895.62 by 12.8 Ans. 49863.936 3895.62 I placed the question...

Treatise on Arithmetic, Practical and Theoretical

Dionysius Lardner - 1834 - 353 σελίδες
...ciphers, may be immediately converted into a decimal by writing down the numerator alone, and cutting oft' as many places to the right as there are ciphers in the denominator. This follows evidently from what lias been just stated. For example, let the fraction...

The principles of arithmetic. [Followed by] The principles of algebra

Wales Christopher Hotson - 1842
...multiplication of a decimal by a number of the form 1000... is performed by removing the decimal point as many places to the right as there are ciphers in the multiplier; for the local values of the figures increase ten -fold for every place the point is removed to the...

A key to the commercial arithmetic

James Morrison (accountant.) - 1845 - 80 σελίδες
...(6.) Q. How do you multiply by 10, 100, 1000, or the like ? A. I have only to remove the decimal point as many places to the right as there are ciphers in the multiplier, annexing ciphers, if necessary, to make up the number of places. (7.) Q. How do you multiply decimals,...

A New System of Arithmetic: In which is Explained and Applied to Practical ...

Calvin Tracy - 1845 - 288 σελίδες
...NOTE. — To multiply a decimal by 10, 100, 1000, &c., it is necessary only to remove the decimal point as many places to the right as there are ciphers in the multiplier. 13. Multiply 1.56 by 10. Ans. 15.6. 14. Multiply 36.541 by 100. Ans. 3654.1. 15. Multiply .42 by 100....

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

Horatio Nelson Robinson - 1845 - 288 σελίδες
...400 quills cost ? Am. $1.80. To multiply decimals by 10, 100, 1000, <S/-c., remove the decimal paint as 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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