0.91+2.09-0.91+2.09简便计算方法？
3个回答
展开全部
0.91+2.09-0.91+2.09
=（0.91-0.91）+2.09×2
=0+4.18
=4.18
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展开全部
0.91+2.09－0.91+2.09
=0.91－0.91+2.09+2.09
=2.09+2.09
=4.18
=0.91－0.91+2.09+2.09
=2.09+2.09
=4.18
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展开全部
0.91+2.09-0.91+2.09简便计算方法？
0.91+2.09-0.91+2.09
=(0.91-0.91)+2.09+2.09
=0+2.09+2.09
=4.18
0.91+2.09-0.91+2.09
=(0.91-0.91)+2.09+2.09
=0+2.09+2.09
=4.18
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已踩过<
评论
收起
你对这个回答的评价是？
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