333330-29-299-2999-29999-299999,等于几?
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333330-29-299-2999-29999-299999,等于几?
![333330-29-299-2999-29999-299999,等于几?](/uploads/image/z/2011381-61-1.jpg?t=333330-29-299-2999-29999-299999%2C%E7%AD%89%E4%BA%8E%E5%87%A0%3F)
333330 - 29 - 299 - 2999 - 29999 - 299999
=333330 - (30-1) - (300-1) - (3000-1) - (30000-1) - (300000-1)
=333330 - 30 +1 - 300 + 1 - 3000 + 1 - 30000 +1 - 300000 +1
=( 333330 - 30 - 300 - 3000 - 30000 - 300000 ) + ( 1 + 1 +1 +1 +1 )
=0 + 5
=5
=333330 - (30-1) - (300-1) - (3000-1) - (30000-1) - (300000-1)
=333330 - 30 +1 - 300 + 1 - 3000 + 1 - 30000 +1 - 300000 +1
=( 333330 - 30 - 300 - 3000 - 30000 - 300000 ) + ( 1 + 1 +1 +1 +1 )
=0 + 5
=5