Certo ou errado?0,07 = 0,7 97,800= 97,800 = 97,8
489,87 = 48 987/100
2,54 = 25,4

Efetue as mutipicações deslocando a vírgula do numeral:
0,71 x 10 = 
0,0789 x 100= 
8,9741 x 1 000
Expliquem por favor.
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