4个回答
展开全部
0.25×0.8+0.025
=0.25×0.8+0.25x0.1
=0.25x(1-0.1)
=0.25-0.025
=0.225
希望能帮到你!
=0.25×0.8+0.25x0.1
=0.25x(1-0.1)
=0.25-0.025
=0.225
希望能帮到你!
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展开全部
0.25×0.8+0.025
=0.25x0.8+0.25x0.1
=0.25x(0.8+0.1)
=0.25x1-0.25x0.1
=0.25-0.025
=0.225
=0.25x0.8+0.25x0.1
=0.25x(0.8+0.1)
=0.25x1-0.25x0.1
=0.25-0.025
=0.225
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展开全部
0.25×0.8+0.025
=0.25×0.8+0.25×0.1
=0.25×(0.8+0.1)
=0.25×0.9
=0.225
=0.25×0.8+0.25×0.1
=0.25×(0.8+0.1)
=0.25×0.9
=0.225
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展开全部
=0.01*25*8+0.025
=0.2+0.025
=0.225
=0.2+0.025
=0.225
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