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

1. (2023一上·临沭月考) 口算3+1=2+3=4-3=5-2=2-1=4+1=0+3=5-5=1+2=2+2=

1. (2023一上·临沭月考) 口算
3+1=
2+3=
4-3=
5-2=
2-1=
4+1=
0+3=
5-5=
1+2=
2+2=