Encontre fraçoes que mostrem a equivalencia entre os seguintes numeros
a) 2,4999...
b)0,999...
c)0,31999...
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Encontre frações que msotrem a equivalencia os seguintes numeros
a. 2,5 e 2,4999.... IDENTIFICANDO
2,5 = 25/10
e
2,4999...
2,4999...(10)multiplica
10x = 24,999...(10) multiplica
100x = 249,999... subtrai
10x = 24,999..
---------------------------
90x = 225,000..
90x = 225
x = 225/90
x = 2,5
b. 1 e 0, 999...
1 = 1/1
e
0,999...
x = 0,999... (10) multiplica
10x = 9,999...
x = 0,999... subtrai
---------------------
9x = 9,000...
9x = 9
x = 9/9
x = 1
c 0,32 e 0,31999.....
0,32 = 32/100
e
0,31999...
0,31999.. (100) multiplica
100x = 31,999...(10) multiplica
1000x = 319,999...
100x = 31,999...subtrai
-------------------------------------
900x = 288,000...
900x = 288
x = 288/900
x = 0,32
a. 2,5 e 2,4999.... IDENTIFICANDO
2,5 = 25/10
e
2,4999...
2,4999...(10)multiplica
10x = 24,999...(10) multiplica
100x = 249,999... subtrai
10x = 24,999..
---------------------------
90x = 225,000..
90x = 225
x = 225/90
x = 2,5
b. 1 e 0, 999...
1 = 1/1
e
0,999...
x = 0,999... (10) multiplica
10x = 9,999...
x = 0,999... subtrai
---------------------
9x = 9,000...
9x = 9
x = 9/9
x = 1
c 0,32 e 0,31999.....
0,32 = 32/100
e
0,31999...
0,31999.. (100) multiplica
100x = 31,999...(10) multiplica
1000x = 319,999...
100x = 31,999...subtrai
-------------------------------------
900x = 288,000...
900x = 288
x = 288/900
x = 0,32
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