题文
下面各题,怎样简便就怎样算.
(0.86+0.86+0.86+0.86)×25 0.2+(3.4+
)×
7.6×
÷[1.9﹣1.9×(1.9﹣1.9)] 74
×19+19×25.4.
下面各题,怎样简便就怎样算.
(0.86+0.86+0.86+0.86)×25 0.2+(3.4+
)×
7.6×
÷[1.9﹣1.9×(1.9﹣1.9)] 74
×19+19×25.4.
试题篮
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