简便计算(脱式)急急急急急急急急急急急急急急急!!!
展开全部
37.19-(25.68-2.81)
37.18+2.81-25.68
=40-25.68
=14.32
15.25-3.1+0.75-4.9
=15.25+0.75-(3.1+4.9)
=16-8
=8
37.18+2.81-25.68
=40-25.68
=14.32
15.25-3.1+0.75-4.9
=15.25+0.75-(3.1+4.9)
=16-8
=8
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展开全部
37.19-(25.68-2.81)
=37.19-25.68+2.81
=37.18+2.81-25.68
=40-25.68
=14.32
15.25-3.1+0.75-4.9
=15.25+0.75-3.1-4.9
=15.25+0.75-(3.1+4.9)
=16-8
=8
=37.19-25.68+2.81
=37.18+2.81-25.68
=40-25.68
=14.32
15.25-3.1+0.75-4.9
=15.25+0.75-3.1-4.9
=15.25+0.75-(3.1+4.9)
=16-8
=8
参考资料: 自己
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展开全部
=37.19+2.81-25.68
=40-25.68
=14.32
15.25-3.1+0.75-4.9
=15.25+0.75-(3.1+4.9)
=16-5
=11
=40-25.68
=14.32
15.25-3.1+0.75-4.9
=15.25+0.75-(3.1+4.9)
=16-5
=11
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