来自程慧芬的问题
递等式计算8.7×3.5-2.2×3.5+6.5×6.5要过程
递等式计算8.7×3.5-2.2×3.5+6.5×6.5
要过程
1回答
2020-04-19 14:55
递等式计算8.7×3.5-2.2×3.5+6.5×6.5要过程
递等式计算8.7×3.5-2.2×3.5+6.5×6.5
要过程
8.7×3.5-2.2×3.5+6.5×6.5
=(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