文档介绍：454-5=
37-8=
8X3=
27-3=
4X1=
64-6=
25+30=
56-4=
3X64-3=
184-3=
124-6=
56+4=
37+3=
244-6=
8X9=
1X4=
2X34-
5X1=
9X1=
354-5=
9X5=
8X9=
45-30=
424-7=
214-7=
494-7=
454-5=
75-7=
104-5=
8：1X8=
10-?2=
13+20=
86-5=
4X2=
3X6=
304-6=
5X3=
27-8=
144-2=
50+40=
3X7=
54-7=
3X2=
10-?2=
8X5=
244-6=
2X5=
164-8=
304-6=
404-8=
7X5=
544-6=
23+17=
3X7=
9X3=
244-3=
2X8=
2X64-4=
454-9=
94-9=
814-9=
204-4=
7X6=
9X4=
164-2=
3X6=
4X7=
124-2=
5X6=
71-68=
25+41=
494-7=
4X9=
16-?24-4=
64-1=
3X6=
104-2=
124-4=
424-6=
154-3=
304-6=
304-6=
5X8=
1X9=
9X3=
154-5=
3X7=
64-3=
544-9=
544-9X3=
494-7=
2+5=
7X9=
6X3=
6X9=
9X4=
544-6=
634-7=
3X1=
304-6=
94-3=
2X8=
324-8=
9-6=
7X3=
564-7X6=
204-4=
4X9=
6X7=
9X9=
14：2=
4X7=
124-4=
4+4=
164-4=
354-7=
494-7=
5X8=
6X5=
7X7=
63+24=
3X8+40=
64-3=
544-9=
284-7=
9X2=
454-9=
7X9=
6X3=
404-8=
36： 6=
9X4=
634-7=
3X1=
6X6=
9X5=
5X6=
404-8X5=
9X6=
104-5=
354-7=
6-2=
2：1=
6X4=
424-6=
274-3=
324-8=
5X3=
7X6=
7X2=
44-4=
1X5=
2X6=
274-9X7=
184-2=
52+35=
484-8=
644-8=
8X1=
65+26=
84-4=
2X7=
3X3=
544-6=
5X6=
14：2=
4X8=
5X4=
7：1=
634-9X4=
6X2=
644-8=
3X2=
8X8=
7X4=
64-2=
3X3=
164-8=
634-7=
94-1=
494-7=
5X4=
23+17=
8X9=
7X8=
56^8X9=
36-9=
214-3=
274-9=
78-10=
324-8=
424-7=
8X4=
6X2=
3X8=
4X9=
1