9999*7778+3333*6666 5.6*69.32+138.64*0.05+693.2*0.43 用简便运算
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9999*7778+3333*66665.6*69.32+138.64*0.05+693.2*0.43用简便运算9999*7778+3333*66665.6*69.32+138.64*0.05+693
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 5.6*69.32+138.64*0.05+693.2*0.43 用简便运算
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
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9999*7778+3333*6666
=9999*7778+9999*2222
=9999*(7778+2222)
=9999*10000
=99990000
第二题
5.6*69.32+138.64*0.05+693.2*0.43=5.6*69.32+69.32*0.1+69.32*4.3
=69.32*(5.6+0.1+4.3)
=69.32*10
=693.2
9999*7778+3333*6666
9999*7778+3333*6666
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7778*9999+3333*6666=?7778×9999×3333×6666=?
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