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25×19+0.75×27.

编辑:chaxungu时间:2026-04-27 13:20:49分类:小学数学题库

0.25×19+0.75×27.
0.25×19+0.75×27,
=0.25×19+(0.25×3)×27,
=0.25×19+0.25×81,
=0.25×(19+81),
=0.25×100,
=25.