Encontre a fração geratriz das dizimas
A ) 3,888... B) 1,262626.... C)7,13555.. D) 0,4121212...
Soluções para a tarefa
Respondido por
1
Encontre a fração geratriz das dizimasA ) 3,888...
38 - 3 35
3,888... = ---------- = -------
9 9
ou
x = 3,888... (10) multiplica
10x = 38,888...
10x = 38,888...
x = 3,888...(SUBTRAIR)
-----------------------
9x = 35,0000
9x = 35
x =35/9
B) 1,262626....
126 - 1 125
1,262626... = --------------- = -----------
99 99
ou
x = 1,262626... (100) multiplica
100x = 126,262626....
100x = 126,262626...
x = 1,262626...
------------------------------- SUBTRAIR
99x = 125,000000...
99x = 125
x = 125/99
C)7,13555..
7135 - 713 6422
7,13555... = ---------------- = -------------
900 900
ou
x = 7,13555... (100) multiplica
100 x = 713,5555... (10) multiplica
1000 x = 7135,5555..
1000x = 7135,555...
100x = 713,555.. (subtrair)
--------------------------------------------
900x = 6422,0000...
900x = 6422
x = 6422/900
412 - 4 408
D) 0,4121212... = ------------------- = ------------
990 990
ou
x = 0,4121212... (10) multiplica
10x = 4,121212... (100) multiplica
1000x = 412,121212...
1000x = 412,121212....
10x = 4,121212.. (subtrair)
-----------------------------------
990x = 408,000000....
990x = 408
x = 408/990
38 - 3 35
3,888... = ---------- = -------
9 9
ou
x = 3,888... (10) multiplica
10x = 38,888...
10x = 38,888...
x = 3,888...(SUBTRAIR)
-----------------------
9x = 35,0000
9x = 35
x =35/9
B) 1,262626....
126 - 1 125
1,262626... = --------------- = -----------
99 99
ou
x = 1,262626... (100) multiplica
100x = 126,262626....
100x = 126,262626...
x = 1,262626...
------------------------------- SUBTRAIR
99x = 125,000000...
99x = 125
x = 125/99
C)7,13555..
7135 - 713 6422
7,13555... = ---------------- = -------------
900 900
ou
x = 7,13555... (100) multiplica
100 x = 713,5555... (10) multiplica
1000 x = 7135,5555..
1000x = 7135,555...
100x = 713,555.. (subtrair)
--------------------------------------------
900x = 6422,0000...
900x = 6422
x = 6422/900
412 - 4 408
D) 0,4121212... = ------------------- = ------------
990 990
ou
x = 0,4121212... (10) multiplica
10x = 4,121212... (100) multiplica
1000x = 412,121212...
1000x = 412,121212....
10x = 4,121212.. (subtrair)
-----------------------------------
990x = 408,000000....
990x = 408
x = 408/990
Respondido por
3
a) 3,888 = 38-3 = 35
_____= ------
9 9
b) 1,26 26 26.. 126 -1/99 = 125/99
c) 7,13555.. 7135-713/900 = 6422/900
d) 0,4121212 = 412-4/990 = 408/990
_____= ------
9 9
b) 1,26 26 26.. 126 -1/99 = 125/99
c) 7,13555.. 7135-713/900 = 6422/900
d) 0,4121212 = 412-4/990 = 408/990
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