2.6×11.9-19×26%怎样简便计算
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2.6×11.9-19×26%怎样简便计算2.6×11.9-19×26%怎样简便计算2.6×11.9-19×26%怎样简便计算2.6×11.9-19×26%=2.6×11.9-19×0.26=0.26
2.6×11.9-19×26%怎样简便计算
2.6×11.9-19×26%怎样简便计算
2.6×11.9-19×26%怎样简便计算
2.6×11.9-19×26%
=2.6×11.9-19×0.26
=0.26×119-19×0.26
=0.26×(119-19)
=0.26×100
=26
2.6×11.9-19×26%
= 2.6×11.9-19÷10×(0.26×10)
=2.6×11.9-1.9×2.6
=2.6×(11.9-1.9)
=2.6×10
=26