Respostas

A melhor resposta!
2013-10-05T21:18:59-03:00
X/0,0025 = X/25/10000 = X*10000/25 = 400
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2013-10-05T21:45:56-03:00
10÷0.0025=4000
10×250=2500
10×500=5000
10×400=4000 C é a resposta certa
10×350=3500
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