2.3×0.25+1.7×1.25简算?
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2.3×0.25+1.7×1.25
=2.3×0.25+1.7×5×0.25
=0.25×(2.3+8.5)
=0.25×10.8
=0.25×10+0.25×0.8
=2.5+0.2
=2.7
=2.3×0.25+1.7×5×0.25
=0.25×(2.3+8.5)
=0.25×10.8
=0.25×10+0.25×0.8
=2.5+0.2
=2.7
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