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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. "
Complete Arithmetic: Theoretical and Practical - Σελίδα 126
των William Guy Peck - 1877 - 341 σελίδες
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The Popular Educator, Τόμοι 1-2;Τόμος 12

1867 - 964 σελίδες
...the explanations given 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 - 476 σελίδες
...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...

Easy Introduction to Mathematics, Τόμος 1

Charles Butler - 1814 - 540 σελίδες
...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 - 160 σελίδες
...other instances we get the 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 - 302 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...

A New and Easy Introduction to the Mathematics: Containing. A system of ...

Ira Wanzer - 1831 - 408 σελίδες
...performed by merely removing the decimal point in the multiplicand as many places farther to the right hand as there are ciphers in the multiplier; annexing ciphers to the multiplicand, when necessary. So, 475.87x10=4758.7 And 21.7x100=2170. And 87.5x1000=87500. ator ; ami ttir fraction,...

Treatise on Arithmetic, Practical and Theoretical

Dionysius Lardner - 1834 - 378 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...

A New Introduction to the Science of Algebra...

Silas Totten - 1836 - 360 σελίδες
...Multiply 0,000031 by 5,000002. Ans. 0,000155000062. NOTE. — To multiply by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are O's in the 6* multiplier. Thus, 23467 x 10 = 234,67, 6,7234 x 100 = 672,34, and 5,71x1000 = 5710. DIVISION...

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

Calvin Tracy - 1840 - 316 σελίδες
....0625, or 6J cts. 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 cyphers in the multiplier. 13. Multiply 1.56 by 10. ^4»*. 15.6. 14. Multiply 36.541 by 100. Ans. 3654.1....

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

Wales Christopher Hotson - 1842 - 306 σελίδες
...fractions being The 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...




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