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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. "
The Elements of Arithmetic - Σελίδα 89
των Augustus De Morgan - 1830 - 136 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 =...

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....

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...

Elements of Arithmetic: For Schools and Academies. In which Decimal and ...

Pliny Earle Chase - 1844 - 246 σελίδες
...the quotient, and you will obtain the dividend. To divide any number by 10, 100, 1000, fyc., remove the decimal point as many places to the right as there are zeroes in the divisor. When there are zeroes at the right hand of the divisor, cut them off, and remove...

The Elements of Arithmetic ... in which Decimal and Integral Arithmetic are ...

Pliny Earle Chase - 1844 - 258 σελίδες
...other factor. The product by zero is always zero. To multiply any number by 10, 100, 1000, &c., remove the decimal point as many places to the right, as there are zeroes in the multiplier. When there are zeroes at the right hand of either, or both factors, perform...

A key to the commercial arithmetic

James Morrison (accountant.) - 1845 - 324 σελίδες
...multiplicand for it. (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...

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

Calvin Tracy - 1845 - 298 σελίδες
....0625, or 6£ 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 ciphers in the multiplier. 13. Multiply 1.56 by 10. Ans. 15.6. 14. Multiply 36.541 by 100. Ans. 3654.1. 15. Multiply...




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