如题所述
1.125 / 0.09
=1.125 × 100 / 9
=112.5 / 9
=12.5
=1.125 × 100 / 9
=112.5 / 9
=12.5
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第1个回答 2011-12-11
1.125÷0.09
=1125÷90
=1125÷9÷10
=125÷10
=12.5本回答被提问者采纳
=1125÷90
=1125÷9÷10
=125÷10
=12.5本回答被提问者采纳