1. (2022一上·重庆市期中) 计算。

3+2=       2-1=       5-0=       0+0=       4-1=       5-4=       1+2=

0+5=       2+3=       1+1=       4-4=       3-2=       5-5=       5-3=

2+2=       3-0=       1+3=       5+0=       5-1=       4+1=       4-2=