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" ... any number divided by 9 will leave the same remainder as the sum of its digits divided by 9. "
Complete Graded Arithmetic: Oral and Written, Upon the Inductive Method of ... - Σελίδα 328
των James Bates Thomson - 1882 - 400 σελίδες
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A New System of Arithmetic, on an Improved Plan, Embracing the Rules of ...

Charles Guilford Burnham - 1857 - 342 σελίδες
...of the number nine, which belongs to no other digit but 3, which is a factor of 9 ; — namely, that any number divided by 9 will leave the same remainder as the sum of its digiU divided by 9. This peculiar property of the number 9 grows out of the decimal relation of place....

A New System of Arithmetic, on an Improved Plan ...

Charles Guilford Burnham - 1859 - 338 σελίδες
...of the number nine, which belongs to no other digit but 3, which is a factor of 9 ; — namely, that any number divided by 9 will leave the same remainder as the sum of its digits divided by 9. This peculiar property of the number 9 grows out of the decimal relation of place. Were the ratio of...

The school arithmetic

Robert Johnston (F.R.G.S.) - 1860 - 188 σελίδες
...MULTIPLICATION. 8. The method of proof (30, vi.) depends on a property of the number 9, viz. : — " any number divided by 9 will leave the same remainder as the sum of its figures divided by 9." 4. The following explanation of the annexed example in multiplication will be...

Higher Arithmetic : Or, The Science and Application of Numbers: Combining ...

James Bates Thomson - 1860 - 440 σελίδες
...its multiple, or its product by any whole number. 15. Any number expressed by the decimal notation, divided by 9, will leave the same re/mainder, as the sum of its figures or digits divided by 9. Demonstration. — Take any number, as 6357 ; now separating it into...

Adams's Improved Arithmetic: Arithmetic, in which are Combined the Analytic ...

Daniel Adams - 1861 - 452 σελίδες
...contains 9 three times + 3 units, its simple value. Hence also, — Any number divided by 9 will have the same remainder as the sum of its digits divided by 9. On this principle is founded a method of proving Addition, Subtraction, Multiplication, and Division,...

The civil service arithmetic. [With] A key, Βιβλίο 1

Robert Johnston (F.R.G.S.) - 1863 - 254 σελίδες
...3, 4, and 6. NOTES—l. The method of proof (vi.) depends on a property of the number 9, viz.: — 'any number divided by 9 will leave the same remainder as the sum of its figures divided by 9.' 2. The explanation of the annexed example in multiplication will be found useful....

The Crittenden Commercial Arithmetic and Business Manual: Designed for the ...

John Groesbeck - 1867 - 226 σελίδες
...part of a thousand when its three right-hand figures may be thus divided. Any number divided by 3 or 9 will leave the same remainder as the sum of its digits divided by 3 or 9. The difference between any number and the sum of its digits is a multiple of 9. The difference...

The Crittenden Commercial Arithmetic and Business Manual: Designed for the ...

John Groesbeck - 1868 - 350 σελίδες
...part of a thousand when its three right-hand figures may be thus divided. Any number divided by 3 or 9 will leave the same remainder as» the sum of its digits divided by 3 or 9. The difference between any number and the sum of its digits is a multiple of 9. The difference...

The Crittendon Commercial Arithmetic and Business Manual: Designed for the ...

John Groesbeck - 1871 - 370 σελίδες
...part of a thousand when its three right-hand figures may be thus divided. Any number divided by 3 or 9 will leave the same remainder as the sum of its digits divided by 3 or 9. The difference between any number and the sum of its digits is a multiple of 9. The difference...

The Bryant and Stratton Business Arithmetic: A New Work, with Practical ...

Henry Beadman Bryant, Emerson Elbridge White, Corydon Giles Stowell - 1872 - 576 σελίδες
...NUMBERS. 188. 1. Nine. — The relation of the number 9 in the decima system of notation is such that any number divided by 9 will leave the same remainder as the sum of its digits divided by 9. The remainder in this case is called the excess of nines. Thus 75 -=-9 =8, Rem. 3, and (7 + 5)-h9 =...




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