8.7x3.5-2.2x3.5+6.5x6.5简算

q62151232022-10-04 11:39:541条回答

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Melodies 共回答了11个问题 | 采纳率100%
8.7x3.5-2.2x3.5+6.5x6.5
=(8.7-2.2)×3.5+6.5×6.5
=6.5×3.5+6.5×6.5
=6.5×(3.5+6.5)
=6.5×10
=65
1年前

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