9999999999乘999999999等于多少?
3个回答
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999999999×999999999
=(1000000000-1)×999999999
=999999999000000000
-999999999
=999999998000000001
=(1000000000-1)×999999999
=999999999000000000
-999999999
=999999998000000001
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展开全部
9999999999×999999999
=(10000000000-1)×(1000000000-1)
=10000000000000000000-10000000000-1000000000+1
=10000000000000000000-11000000000+1
=9999999989000000000+1
=9999999989000000001
=(10000000000-1)×(1000000000-1)
=10000000000000000000-10000000000-1000000000+1
=10000000000000000000-11000000000+1
=9999999989000000000+1
=9999999989000000001
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