如题所述
2.5*0.48
=（2+0.5）*0.48
=2*0.48+0.5*0.48
=0.96+0.24
=1.2
=（2+0.5）*0.48
=2*0.48+0.5*0.48
=0.96+0.24
=1.2
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第1个回答 2020-09-13
2.5×（4×0.12）＝2.5×4×0.12＝10×0.12＝1.2
第2个回答 2020-09-13
2.5×0.4+2.5×0.08
=1+0.2
=1.2
=1+0.2
=1.2
