来自顾弘的问题
(2002•龙湖区)计算(能简便的要简便)27.5+21÷14×7234×99-76643×85-35×43(0.4+13)÷225+34[6+12×(512-38)]×53.
(2002•龙湖区)计算(能简便的要简便)
27.5+21÷14×7
234×99-766
43×85-35×43
(0.4+13)÷225+34
[6+12×(512-38)]×850.


(2002•龙湖区)计算(能简便的要简便)27.5+21÷14×7234×99-76643×85-35×43(0.4+13)÷225+34[6+12×(512-38)]×53.
(2002•龙湖区)计算(能简便的要简便)
27.5+21÷14×7
234×99-766
43×85-35×43
(0.4+13)÷225+34
[6+12×(512-38)]×850.
(1)27.5+21÷14×7,=27.5+10.5,=38;(2)234×99-766,=234×100-(234+766),=23400-1000,=22400;(3)43×85-35×43,=(85-35)×43,=1×43,=43;(4)(0.4+13)÷225+34,=(25+13)÷225+34,=1115...