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你好,很高兴地解答你的问题。
2.5×2.7×2.4
=2.5×2.7×(8×0.3)
=0.3×(8×2.5)×2.7
=0.3×20× 2.7
=20×(0.3×2.7)
=20×0.81
=20×(0.8+0.01)
=20×0.8+20×0.01
=16+0.2
=16.2
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第1个回答 2019-08-30
2.5*2.7*2.4
=2.5*(2+0.4)*2.7
=(5+1)*2.7
=6*2.7
=6*(2+0.7)
=12+4.2
=16.2
=2.5*(2+0.4)*2.7
=(5+1)*2.7
=6*2.7
=6*(2+0.7)
=12+4.2
=16.2
第2个回答 2023-02-24
2.5x2.7x2.4
=2.5x2.4x2.7
=2.5x4*0.6x2.7
=6*2.7
=6*3*0.9
=5.4*3
=16.2
=2.5x2.4x2.7
=2.5x4*0.6x2.7
=6*2.7
=6*3*0.9
=5.4*3
=16.2
第3个回答 2019-08-30
你可以将减号提出来, 后面可以变成加号原式 =19.8-(5.72+2.28) =19.8-8 =11.8本回答被网友采纳