3.6×2,36+3.61×6.4的简便运算
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31.6(算完了偶也醉了)
解：
3.6×2.36+3.61×6.4
=3.6×2.36+(3.6+0.01)×6.4
=3.6×2.36+3.6×6.4+0.01×6.4
=3.6×(2.36+6.4)+0.01×6.4
=3.6×8.76+0.01×6.4
=3.6×(9-0.24)+0.01×6.4
=3.6×9- 3.6×0.24+0.01×6.4
=3.6×9- 3.6×6×0.04+0.04×1.6
=3.6×9-0.04×(3.6×6-1.6)
=3.6×9-0.04×20
=3.6×9-0.8
=3×9+0.6×9-0.8
=27+5.4-0.8
=27+4.6
=31.6
PS：度娘不要误杀哦。
解：
3.6×2.36+3.61×6.4
=3.6×2.36+(3.6+0.01)×6.4
=3.6×2.36+3.6×6.4+0.01×6.4
=3.6×(2.36+6.4)+0.01×6.4
=3.6×8.76+0.01×6.4
=3.6×(9-0.24)+0.01×6.4
=3.6×9- 3.6×0.24+0.01×6.4
=3.6×9- 3.6×6×0.04+0.04×1.6
=3.6×9-0.04×(3.6×6-1.6)
=3.6×9-0.04×20
=3.6×9-0.8
=3×9+0.6×9-0.8
=27+5.4-0.8
=27+4.6
=31.6
PS：度娘不要误杀哦。
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=3.6（2.36+3.61×2）
=3.6×2（1.18+3.61）
=7.2×4.79
=34.488
=3.6×2（1.18+3.61）
=7.2×4.79
=34.488
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是两个算式吗😊
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