9999*7778+3333*6666,第一题5.6*69.32+138.64*0.05+693.2*0.43,第二题

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9999*7778+3333*6666,第一题5.6*69.32+138.64*0.05+693.2*0.43,第二题
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9999*7778+3333*6666,第一题5.6*69.32+138.64*0.05+693.2*0.43,第二题
9999*7778+3333*6666,第一题
5.6*69.32+138.64*0.05+693.2*0.43,第二题

9999*7778+3333*6666,第一题5.6*69.32+138.64*0.05+693.2*0.43,第二题
9999*7778+3333*6666,第一题
=9999*7778+9999*2222
=9999*(7778+2222)
=9999*10000
=99990000
5.6*69.32+138.64*0.05+693.2*0.43,第二题
=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+9999*2222
=9999*(7778+2222)
=9999*10000
=99990000
5.6*69.32+138.64*0.05+693.2*0.43
=5.6*69.32+693.2*0.43+138.64*0.05
=5.6*69.32+69.32*4.3+69.32*0.1
=(5.6+4.6+0.1)*69.32
=10*69.32
=693.2

1：
=3333*3*7778+3333*6666=3333*（7778+7778+7778+2222+2222+2222）=3333*3*（7778+2222）
2:
=69.32*（5.6+2*0.05+10*0.43）=69.32*（5.6+0.1+4.3）

9999*7778+3333*6666=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*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 + 1111*3*6666
= 9999*7778 + 1111*9999
= 9999*(7778+1111)
= 9999 * 8889
= (10000 - 1) * 8889
= 88890000 - 8889
= 88881111
5.6*69.32+138.6...

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9999*7778+3333*6666
= 9999*7778 + 1111*3*6666
= 9999*7778 + 1111*9999
= 9999*(7778+1111)
= 9999 * 8889
= (10000 - 1) * 8889
= 88890000 - 8889
= 88881111
5.6*69.32+138.64*0.05+693.2*0.43
= 5.6*69.32 + 69.32*2*0.05 + 693.2*0.43
= 5.6*69.32 + 69.32*0.1 + 693.2*0.43
= (5.6 + 0.1) * 69.32 + 693.2*0.43
= 5.7 * 69.32 + 693.2*0.43
= 0.57*10 * 69.32 + 693.2*0.43
= 0.57*693.2 + 693.2*0.43
= 693.2*(0.57 + 0.43)
= 693.2*1
= 693.2*

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