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" One ten and nine units, or nineteen, 19 Two tens, or twenty, 20 Three tens, or thirty, 30 Four tens, or forty, 40 Five tens, or fifty...... 50 Six tens, or sixty, 60 Seven tens, or seventy, 70 Eight tens, or eighty, 80 Nine tens, ..or ninety, ..90 Ten... "
Practical and Mental Arithmetic on a New Plan: In which Mental Arithmetic is ... - Σελίδα 88
των Roswell Chamberlain Smith - 1833 - 268 σελίδες
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Practical and Mental Arithmetic on a New Plan: In which Mental ..., Βιβλίο 2

Roswell Chamberlain Smith - 1829 - 268 σελίδες
...tens, or forty, 40 Five tens, or fifty 50 Six tens, or sixty, 60 Seven tens, or seventy, 70 Eight tons, or eighty, 80 Nine tens, or ninety, 90 Ten tens, or...see the value of the cipher again ; for, by placing a cipher at the right often, it becomes one hundred, (100,) that is., ten tens : should we place another...

The Common School Arithmetic: Prepared for the Use of Academies and Common ...

Charles Davies - 1833 - 270 σελίδες
...simply are mentioned, units of the first order are always meant : Two tens, or twenty, are written - - 20 Three tens, or thirty, 30 Four tens, or forty,...Eight tens, or eighty 80 Nine tens, or ninety, 90 $ 7. The intermediate numbers between 10 and 20, between 20 and 30, &c. may readily be expressed by...

Mathematics for Practical Men: Being a Common-place Book of ... Pure and ...

Olinthus Gregory - 1834 - 427 σελίδες
...twice ten, or twenty. And thus we may proceed with respect to the numbers that fall between twenty and three tens or thirty 30, four tens or forty 40, five...70, eight tens or eighty 80, nine tens or ninety 90. After 9 are added to the 90 (ninety) numbers can no longer be expressed by two figures, but require...

Practical and Mental Arithmetic, on a New Plan, in which Mental Arithmetic ...

Roswell Chamberlain Smith - 1836 - 284 σελίδες
...or thirty, 30 Four tci\s, or forty, 40 Five tens, or fifty, 50 Six tens or sixty, (ill Seven lens, or seventy, 70 Eight tens, or eighty, 80 Nine tens,...see the value of the cipher again ; for, by placing я cipher at (he right of ten, it becomes one hundred, (100,) "that is, ten tens: should we place another...

Practical and Mental Arithmetic on a New Plan: In which Mental Arithmetic is ...

Roswell Chamberlain Smith - 1837 - 284 σελίδες
...or fifteen, ..15 One ten and six units, or sixteen, 16 One ten and seven units, or seventeen, ...¡7 One ten and eight units, or eighteen, ....18 One ten...see the value of the cipher again ; for, by placing 8 •cipher at the right uf ten, it becomes one hundred, (100,) that is, ten tens : should we place...

Practical and Mental Arithmetic, on a New Plan, in which Mental Arithmetic ...

Roswell Chamberlain Smith - 1837
...tens, or forty, 40 ** Five tens, or fifty, 50 Six tens, or sixty 60 fSeven tens, or seventy, ..70 Kight tens, or eighty, 80 Nine tens, or ninety, 90 Ten tens,...hundred, 100 Q. Here we see the value of the cipher again l for, by placing a c:pher at the right of ten, it becomes one hundred, (100,) that is, ten teus: should...

Mental and Practical Arithmetic

Charles Davies - 1838 - 288 σελίδες
...units simply are named, units of the Jirst order are always meant. Two tens, or ttventy, are written - 20 Three tens, or thirty, - - - - 30 Four tens, or...eighty, - - - - 80 Nine tens, or ninety, - - - - 90 The intermediate numbers between 10 and 20, between 20 and 30, &c., may be readily expressed by considering...

Practical and Mental Arithmetic ...

Roswell Chamberlain Smith - 1839
...or nineteen, 19 Two tens, or twenty, 20 Three lens, or thirty, 30 Four tens, or forty, 40 Five teus, or fifty, ..50 Six tens, or sixty, 60 Seven tens,...Nine tens, or ninety, 90 Ten tens, or one hundred, 1ÙO Q. Here we see the value of the cipher again ; for, by placing я cipher at the right of ten,...

Practical and Mental Arithmetic on a New Plan: In which Mental Arithmetic is ...

Roswell Chamberlain Smith - 1841 - 284 σελίδες
...uaits, or seventeen, 17 One ten and eight uaits, or eighteen, 18 One ten and aine units, or aineteen, 19 Two tens, ..or twenty, 20 Three tens, or thirty,...90 Ten tens, or one hundred, 100 Q. Here we see the valne of the cipher again ; for, by placing a cipher at the right of ten, it hecomes one hundred, (100,)...

Arithmetic, Designed for Academies and Schools

Charles DAVIES (LL.D.) - 1843 - 12 σελίδες
...units simply are named, units of the fast order are always meant. Two tens, or twenty, are written - 20 Three tens, or thirty, - - - - 30 Four tens, or...eighty, - - - - 80 Nine tens, or ninety, - - - - 90 The intermediate numbers between 10 and 20, between 20 and 30, &c., may be readily expressed by considering...




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