问题 解答题

11+192+193+19994+199995=

答案

11+192+193+19994+199995

=(10+1)+(200-8)+(200-7)+(20000-6)+(200000-5)

=(10+200+200+20000+200000)-(8+7+6+5-1)

=220410-25,

=220385.

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