3.77x1.8=?
展开全部
3.77×1.8
= 3.77×(2-0.2)
= 3.77×2-3.77×0.2
= 7.54-0.754
= 6.786
或
3.77×1.8
=3.77×(1+0.8)
=3.77+3.77×0.8
=3.77+3.016
=6.786
= 3.77×(2-0.2)
= 3.77×2-3.77×0.2
= 7.54-0.754
= 6.786
或
3.77×1.8
=3.77×(1+0.8)
=3.77+3.77×0.8
=3.77+3.016
=6.786
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