1240*3.4+760*8.2+1.24*7700+0.76*2900怎样用简便方法计算?
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![1240*3.4+760*8.2+1.24*7700+0.76*2900怎样用简便方法计算?](/uploads/image/z/213575-23-5.jpg?t=1240%2A3.4%2B760%2A8.2%2B1.24%2A7700%2B0.76%2A2900%E6%80%8E%E6%A0%B7%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%3F)
1240*3.4+760*8.2+1.24*7700+0.76*2900怎样用简便方法计算?
1240*3.4+760*8.2+1.24*7700+0.76*2900怎样用简便方法计算?
1240*3.4+760*8.2+1.24*7700+0.76*2900怎样用简便方法计算?
1240*3.4+760*8.2+1.24*7700+0.76*2900
=124*34+124*77+76*82+76*29
=124*(34+77)+76*(82+29)
=124*101+76*101
=101*(124+76)
=101*200
=20200