11*8.75+125*0.19怎样简便计算要飞快,慢了不要.
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![11*8.75+125*0.19怎样简便计算要飞快,慢了不要.](/uploads/image/z/199253-29-3.jpg?t=11%2A8.75%2B125%2A0.19%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E8%A6%81%E9%A3%9E%E5%BF%AB%2C%E6%85%A2%E4%BA%86%E4%B8%8D%E8%A6%81.)
11*8.75+125*0.19怎样简便计算要飞快,慢了不要.
11*8.75+125*0.19怎样简便计算
要飞快,慢了不要.
11*8.75+125*0.19怎样简便计算要飞快,慢了不要.
11*8.75+125*0.19
=11*1.25*7+1.25*19
=77*1.25+1.25*19
=1.25*(77+19)
=1.25*96
=1.25*8*12
=120
11*8.75+125*0.19
=11*125*0.07+125*0.19
=125*(0.77+0.19)
=125*0.96
=125*(1-0.04)
=125-5
=120