8.7+1.3×2.6简便运算？
3个回答
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8.7+1.3×2.6
=8.7+1.3×1+1.3×1.6
=（8.7+1.3）+1×1.6+0.3×1.6
=10+1.6+0.48
=10+2.08
=12.08
=8.7+1.3×1+1.3×1.6
=（8.7+1.3）+1×1.6+0.3×1.6
=10+1.6+0.48
=10+2.08
=12.08
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展开全部
=8.7+1.3×1+1.3×1.6
=（8.7+1.3）+1×1.6+0.3×1.6
=10+1.6+0.48
=10+2.08
=12.08
=（8.7+1.3）+1×1.6+0.3×1.6
=10+1.6+0.48
=10+2.08
=12.08
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展开全部
= 8.7+1.3×1+1.3×1.6
=（8.7+1.3）+1×1.6+0.3×1.6
= 10+1.6+0.48
= 10+2.08
= 12.08
=（8.7+1.3）+1×1.6+0.3×1.6
= 10+1.6+0.48
= 10+2.08
= 12.08
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评论
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