75x4.67+17.9x2.5怎么简便算?
1个回答
2013-10-16
展开全部
解:75×4.67+17.9×2.5
=25×3×4.67+25×1.79
=25×﹙14.01+1.79﹚
=25×15.8
=50×7.9
=5×79
=5×﹙80-1﹚
=400-5
=395.
希望帮到你o(∩_∩)o
望亲及时采纳,谢谢!!
=25×3×4.67+25×1.79
=25×﹙14.01+1.79﹚
=25×15.8
=50×7.9
=5×79
=5×﹙80-1﹚
=400-5
=395.
希望帮到你o(∩_∩)o
望亲及时采纳,谢谢!!
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