5.6×569.32+138.64×0.05+693.2×0.43 简便运算

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5.6×569.32+138.64×0.05+693.2×0.43 简便运算

5.6×569.32+138.64×0.05+693.2×0.43 简便运算
5.6×569.32+138.64×0.05+693.2×0.43 简便运算

5.6×569.32+138.64×0.05+693.2×0.43 简便运算
5.6×569.32+138.64×0.05+693.2×0.43
=5.6×(500+69.32)+(69.32×2)×0.05+69.32×4.3
=5.6×500+5.6×69.32+69.32×0.1+600×0.43 +93.2×0.43
=56×50+5.6×69.32+69.32×0.1+69.32×4.3
=2800+(5.6+0.1+4.3)×69.32
=2800+10×69.32
=2800+693.2
=3493.2

应该没有吧。。换成分数试一试