请展开查看知识点列表
14-5= 46-9= 14-9=
90+5= 15-7= 54-4=
11-9= 13-6= 12-6=
16-8= 9+30= 11-8=
14-7= 17-9= 4+80=
12-4= 15-8= 12-3=
34 +17 = 51 – 19 = 28 + 27 – 25= 100 – 48 + 37 = 6 + 6 + 6 =
6 × 3 = 4× 4= 3 ×3 = 5×2 = 2×4 =
3dm – 22cm=cm 60m+9m=m 39m – 6m =m
5cm+80cm=cm 9m – 28dm =dm 1m – 15cm=cm
15+20= 54-50= 20+75= 80+10=
17+53= 17+13= 29-10= 22+37=
90-54= 46+25-17=
进入组卷