文档介绍：20+55=
64-32=
87-72=
88-8=
48-29=
62+26=
86-77=
39-36=
75+24=
51+27=
18+81=
24+43=
13+74=
89-53=
74-55=
80+18=
16+67=
21+18=
93-33=
55+5=
100-57=
34+53=
23-17=
76-65=
72+23=
43+42=
75-14=
40-33=
68+15=
10+32=
76+14=
64-24=
62+32=
83-62=
68-11=
78-15=
69-18=
19+15=
50+16=
29+30=
98-44=
12+64=
76+14=
65+19=
21+5=
100-56=
29+67=
34-16=
36+49=
39-23=
95-83=
45+13=
82+13=
17+43=
13+55=
93-38=
91-37=
59-54=
73+23=
78-57=
24-18=
95-26=
68-44=
84-16=
57+19=
71-17=
33+67=
39+29=
39+35=
54+46=
90-29=
22+38=
52-11=
89-42=
27-14=
33-19=
44-28=
48+10=
83-31=
12+47=
50-19=
74-68=
58+16=
18+56=
27+70=
53-34=
79-32=
24+49=
23-10=
20+26=
45-43=
21+35=
34-13=
65-23=
48+17=
27+34=
100-28=
32+55=
89-67=
37+47=
44-31=
35+48=
42+22=
59+33=
96-43=
48-47=
46-14=
92-63=
17+21=
30+41=
48-47=
50+18=
67+12=
53+22=
63+10=
65-21=
58-8=
16+70=
59-38=
23+24=
46-29=
23-16=
18+72=
12+58=
80-36=
29+54=
99-45=
68-46=
51-49=
27+35=
59-25=
32-16=
22+75=
81+18=
92-83=
95-75=
24-13=
39-13=
17+43=
78+14=
81-22=
72+10=
55-16=
74-49=
70+26=
26+50=
69-29=
39+45=
80-61=
83+17=
45-35=
29+24=
72+17=
48+27=
60-29=
21+55=
31+35=
31-20=
71+25=
73+26=
94-25=
23+41=
20+55=
43+11=