C(0.75*0.25+0.75*3.75)*1.6
=0.75*（0.25+3.75）*1.6
=0.75*4*1.6
=3*1.6
=4.8
运用乘法分配律和乘法结合律可以使计算简便的算式哪个?
运用乘法分配律和乘法结合律可以使计算简便的算式哪个?
A (1.428*0.375)*0.7*2.6 B 25.005*4.5 C (0.75*0.25+0.75*3.75)*1.6 D(1.8*2.5*4.2)*(0.5*2.1)
A (1.428*0.375)*0.7*2.6 B 25.005*4.5 C (0.75*0.25+0.75*3.75)*1.6 D(1.8*2.5*4.2)*(0.5*2.1)
数学人气：686 ℃时间：2020-05-15 02:56:46
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