神马作文网9999*7778+3333*6666 5.6*69.32+138.64*0.05+693.2*0.43 用简便运算
来源：学生作业帮 编辑：神马作文网作业帮 分类：数学作业 时间：2024/11/16 12:10:16
9999*7778+3333*6666 5.6*69.32+138.64*0.05+693.2*0.43 用简便运算
9999×7778+3333×6666
=9999×7778+3333×3×2222
=9999×7778+9999×2222
=9999×(7778+2222)
=9999×10000
=99990000
5.6×69.32+138.64×0.05+693.2×0.43
=5.6×69.32+69.32×2×0.05+69.32×10×0.43
=5.6×69.32+69.32×0.1+69.32×4.3
=(5.6+0.1+4.3)×69.32
=10×69.32
=693.2
请点击下面的【选为满意回答】按钮.
=9999×7778+3333×3×2222
=9999×7778+9999×2222
=9999×(7778+2222)
=9999×10000
=99990000
5.6×69.32+138.64×0.05+693.2×0.43
=5.6×69.32+69.32×2×0.05+69.32×10×0.43
=5.6×69.32+69.32×0.1+69.32×4.3
=(5.6+0.1+4.3)×69.32
=10×69.32
=693.2
请点击下面的【选为满意回答】按钮.
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