用简便方法计算:2.6×7.4+0.26×25+0.026×10=____________________________________.
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用简便方法计算:2.6×7.4+0.26×25+0.026×10=____________________________________.
用简便方法计算:2.6×7.4+0.26×25+0.026×10=____________________________________.
用简便方法计算:2.6×7.4+0.26×25+0.026×10=____________________________________.
2.6×7.4+0.26×25+0.026×10
=0.26×74+0.26×25+0.26×1
=0.26×(74+25+1)
=0.26×100
=26