7+68= 69+24= 73-44= 36+(34-6)= 80-32-26= 71- (65-19)=
7×5=
45÷9=
14÷7=
5×3=
0÷5=
56÷7=
3×9=
49÷7=
43+20=
73-9=
25÷5=
3×6=
6×7=
20÷5=
36+9=
65-50=
28÷4=
4×6=
72÷8=
54÷9=
4×8+3=
6×7+10=
30+6×7=
38-18÷9=
(个)
×=38.5
×=3.85
385÷=0.385