文档介绍：825-25=
9864-48=
900-22=
57x307=
59x198=
689-34=
1105-55=
504x32=
358-25=
538-33=
986-29=
13320-70=
603x36=
812-57=
860-30=
647-27=
786-94=
689-21=
783-58=
45x368=
750x40=
188x25=
2704-26=
343-32=
4800-600=
2700-300=
986-29=
25x480=
905-45=
450x78=
899-36=
367-29=
99007-45=
7403-68=
864-57=
562+865=
528+462=
952-653=
965+652=
562*56=
513*56=
2565-545 =
432-85=
2132+52=
222-15=
5258x552 =
422+52=
4521-655=
424+536=
524-855=
56+578 =
452*54=
854-465=
552+652=
465-52=
4562-565 =
156x56=
6125+46=
446x58 =
125+65=
123+665=
122-45 =
135-62 =
123+56=
452-125=
589-69 =
623+533=
958-652=
364x59=
35X12=
3594-3=
567+284=
602-394=
46X22=
606-208=
6034-7=
198+303=
4264-4=
23X37=
46X58=
326X5=
4824-8=
3704-7=
784-685=
76X15 =
4864-2=
6074-5=
900-807=
9154-3=
5604-4=
458+542=
4234-3=
87X19=
3624-6=
5254-3 =
25495 =
1924-4 =
60297 =
8394-9 =
7264-6 =
51X16 =
78X22 =
41694=
8234-8 =
63X43=
3674-4=
7954-5=
42X53=
15X82=
79X97=
28X32 =
54X25 =
48X61 =
39X42 =
1684-8=
3704-5=
6404-7=
19X64=
4704-9=
5224-6=
19X64=
4704-9=
5224-6=
3124-7=
5704-8=
8104-9=
6604-5=
8044-7=
4624-3 =
78094 =
7294-9 =
6244-6=
2500+300 =
156-97=
386+479=
321X12 =
125X23 =
18X250 =
52X49=
34X54=
106X51 =
48X34 =
82X16=
45X93 =
66 X 65=
55X18=
75X26=
8164-8 =
79X29=
43X36=
62X71=
38X44=
8654-5=
9844-8=
4374-3=
41374-9=
31X81=
97X22=
57X21=
42X79=
5. 5-4. 7=
6. 6+2. 6=
6. 4-2. 8=
1-0. 5=
0. 3+0. 6=
1. 5+0. 9=
3. 2-1. 5=
5. 3+2. 7=
8+2. 18=
2. 7+2. 3=
10. 8-2. 8=
7. 2-3. 2=
14. 6+16. 74=
10. 7-2. 8=
15. 15-8. 8=
1-0. 3=
4. 8+7. 7=
5-1. 8=
12. 45+3. 6=
9. 4+6. 42=
27X16 =
39X66 =
17X51 =
43X22=
1754-5=
4604-8=
84054-7=
916094=
36644-6=
23604-4=
18X34 =
19X25 =
27X32 =
45X12 =
33X12=
32X69=
23X31=
142X23=
32X37=
45X12=
114X25=
433X36=
25X43=
302X24=
59X27=
4204-8=
7934-8=
8164-4=
14X53=
1