1.2+2.3+3.4+4.5+5.612+23+34+45+56.
问题描述:
. 1.2+2.3+3.4+4.5+5.6 12+23+34+45+56
答
,1.2+2.3+3.4+4.5+5.6 12+23+34+45+56
=
,1.2+2.3+3.4+4.5+5.6 (1.2+2.3+3.4+4.5+5.6)×10
=
.1 10