Question

三十七点五乘二十一点五乘零点一一二加上三十五点五乘十二点五乘零点一一二是多少？

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Answer 1

三十七点五乘二十一点五乘零点一一二加上三十五点五乘十二点五乘零点一一二
=37.5*21.5*0.112+35.5*12.5*0.112
=0.112*(37.5*21.5+35.5*12.5)
=0.112*(806.25+443.75)
=0.112*1250
=140

或
三十七点五乘二十一点五乘零点一一二加上三十五点五乘十二点五乘零点一一二
=37.5*21.5*0.112+35.5*12.5*0.112
=0.112*(37.5*21.5+35.5*12.5)
=0.112*[(5*3*2.5)*(5*4.3)+(5*7.1)*(5*2.5)]
=0.112*5*5*2.5*(3*4.3+7.1)
=0.112*25*2.5*(12.9+7.1)
=0.112*25*2.5*20
=140