2.9✘0.45+2.9✘0.55+2.9简便方法?
5个回答
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2.9*0.45+2.9*0.55+2.9
=2.9*(0.45+0.55)+2.9
=2.9*1+2.9
=2.9+2.9
=5.8
=2.9*(0.45+0.55)+2.9
=2.9*1+2.9
=2.9+2.9
=5.8
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原式=2.9×(0.45+0.55+1)
=2.9×2
=5.8
=2.9×2
=5.8
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简算:
2.9×0.45+2.9×0.55+2.9
=2.9×(0.45+0.55)+2.9
=2.9×1+2.9
=2.9+2.9
=5.8
2.9×0.45+2.9×0.55+2.9
=2.9×(0.45+0.55)+2.9
=2.9×1+2.9
=2.9+2.9
=5.8
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展开全部
2.9×0.45+2.9×0.55+2.9
=2.9×(0.45+0.55+1)
=2.9×2
=5.8
=2.9×(0.45+0.55+1)
=2.9×2
=5.8
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已踩过<
评论
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你对这个回答的评价是?
展开全部
原式=2.9×(0.45+0.55+1)
=2.9x2
=5.8
=2.9x2
=5.8
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你对这个回答的评价是?
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