算术题:18.3/4+5.3*2.5+7.13*7.5
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算术题:18.3/4+5.3*2.5+7.13*7.5
算术题:18.3/4+5.3*2.5+7.13*7.5
算术题:18.3/4+5.3*2.5+7.13*7.5
除以4等于乘以0.25
然后用乘法分配律,结合律什么的
建议用计算器吧、、、
18.3/4+5.3*2.5+7.13*7.5
=1.83*2.5+5.3*2.5+7.13*3*2.5
=(1.83+5.3+21.39)*2.5
=28.52*2.5