Question

1-1/10-11/100-111/1000-1111/10000=?怎样计算简便

Answer 1

1-1/10-11/100-111/1000-1111/10000
=1/10000×(10000-1000-1100-1110-1111)
=1/10000×5679
=5679/10000

Answer 2

1-1/10-11/100-111/1000-1111/10000
=1-1/10-10/100-1/100-100/1000-11/1000-1000/10000-111/10000
=1-4/10-100/10000-110/1000-111/10000
=5/10-321/10000
=4679/10000