文档介绍:7×÷7×=
×30%=
1÷15=
×÷×9=
92=
+×0=
=
-=
-=
8×=
1×8+1×2=
-+=
12÷
+×0=
78-=
=
=
-=
÷-÷=
×8=
×=
(+)×24=
1÷× =
÷3-=
2006− 619=
-=
÷=
88-55=
199+65=
×=
2÷=
++=
571-402=
(++)×8=
×÷×=
+=
××8=
10÷=
÷+=
10-=
1÷=
-=
2÷=
2- =
1÷- ÷1=
÷=
×4×=
25×24=  
÷=
4- =
(+)÷9 =
3 - =
10÷1%=
÷=
×=
6×÷6×=
1÷7+=
-6=
8×125%=
43+96=
2006-619=
8÷20=
-=
×60=
80÷=
-=
÷25%=
+÷2=
÷2=
÷×0=
-1=
×4=
75×10%=
7××=
1-=
9÷=
×15=
×4=
2×0=
4÷=
×=
-=
÷=
+ 6=
7-(1-)=
×300=
×=
+ =
(-)×18 =
0. 5÷ 0. 25 =
+=
÷6=
×=
÷=
-×=
- =
+-=
74×99=
÷=
- =
×1000 =
9÷=
-7=
786-298=
80÷=
12-=
×=
÷=
1×15=
10÷×10=
6-=
9 + =
-=
×2÷×2=
×÷=
+3=
15-=
305-199=
×4=
8×%=
÷=
+=
3-=
÷=
×=
+=
3200÷80=
6-=
-=
1-=
2+2%=
11-4=
2×=
25×24= 
7×÷7×=
1÷=
×=
+=
×÷×9=
×÷=
÷=
1×=
+4 =
0÷=
×=
÷=
×60=
0×26=
19+24=
×=
×÷×=
×=
(-)×30=
×÷2×15=
4×÷4×=
×=
÷÷=
364+298=
4×÷4×=
(-6)×=
+-12=
8×125%=
(1-)×16=
×=
×8=  
1÷=
÷6=
1÷15=
×5 =
×40