3个回答
2017-02-27
展开全部
2.25×27+2.7×75.7-2.7简便计算
解:2.25×27+2.7×75.7-2.7
=22.5×2.7+2.7×75.7-2.7
=2.7x(22.5+75.7-1)
=2.7x97.2
=262.44
解:2.25×27+2.7×75.7-2.7
=22.5×2.7+2.7×75.7-2.7
=2.7x(22.5+75.7-1)
=2.7x97.2
=262.44
展开全部
2.25×27+2.7×75.7-2.7
=2.7x(22.5+75.7-1)
=2.7x97.2
=3x97.2-0.3x97.2
=291.6-29.16
=291.6-30+0.84
=261.6+0.84
=262.44
=2.7x(22.5+75.7-1)
=2.7x97.2
=3x97.2-0.3x97.2
=291.6-29.16
=291.6-30+0.84
=261.6+0.84
=262.44
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展开全部
=2.25×27+27×7.57-27×0.1
=27×(2.25+7.57-0.1)
=27×(2.25+7.57-0.1)
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