43+52=
79+20=
80-50=
46-16+30=
69-20=
38+11=
45+55=
60+29-7=
6×7=
9×4=
26-0=
5×3-7=
8×6=
53+19=
4×5=
80-21+18=
54+25 =
100-36=
2×7=
6×8-19=
①除数错误 ②商错误 ③商的位置错误
28÷4= 7×8= 27-9= 5×5=
54÷6= 49÷7= 45÷9= 3×6=
8×5= 2×7= 41-5= 7×3=
9×5= 3×4= 54-9= 3×2=
20+6= 85+3= 2+38=
65+20= 96-50= 81-9=
52-22= 80-50-30= 32+20-2=
41+9=
52+8=
47-32=
24-8=
32-10+8=
29-9=
56-9=
7+85=
85-33=
43+7-8=
6084-20 4×48 1米30厘米+70厘米
5+5+5+5=×
8+8+8=×
3+3+3+3+3+3+3=×