计算:1.2+2.3+3.4+4.5+5.6+6.712+23+34+45+56+67.

问题描述:

计算:

1.2+2.3+3.4+4.5+5.6+6.7
12+23+34+45+56+67

1.2+2.3+3.4+4.5+5.6+6.7
12+23+34+45+56+67

=
1.2+2.3+3.4+4.5+5.6+6.7
(1.2+2.3+3.4+4.5+5.6+6.7)×10

=
1
10