(2.2乘10的八次方)除以(4.4乘10的2次方)= (结果用科学记数法)

快啊！！！

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0.5乘以10的6次方

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220000000/440=5000000

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2.2*108/4.4*102
=0.5*106
=500000=5.E+05

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