算一算,想一想.
|
37+9= |
9+37= |
39+7= |
7+39= |
|
8+26= |
26+8= |
28+6= |
6+28= |
算一算,想一想.
|
7+6= |
5+9= |
8+2= |
9+8= |
|
27+6= |
35+9= |
8+62= |
9+78= |
算一算,想一想.
|
7+6= |
5+9= |
8+2= |
9+8= |
|
27+6= |
35+9= |
8+62= |
9+78= |