文档介绍：32+49= 52-24=
19+19= 93-89=
72+19= 43-15=
23+48= 68-49=
47+14= 86-27=
45+19= 70-18=
75+18= 78-39=
13+48= 45-28=
25+18= 87-39=
62+17= 86-29=
29+54= 61-47=
63+29= 86-57=
34+18= 82-17=
29+38= 95-76=
58+17= 84-48=
32+49= 90-59=
21+19= 55-36=
48+35= 88-59=
39+45= 42-17=
29+18= 56-27=
56+17= 35-18=
28+32= 38-19=
78+13= 72-53=
29+42= 21-12=
24+18= 62-44=
13+38= 52-19=
52+19= 27-19=
39+17= 32-18=
29+38= 43-27=
58+17= 76-48=
46+8= 62-18=
16+19= 47-39=
35+24= 40-26=
65+26= 44-16=
38+59= 51-34=
58+19= 76-18=
75+19= 23-5=
36+48= 50-17=
25+65= 13-6=
53+17= 66-18=
7+54= 42-7=
36+29= 82-28=
17+18= 47-19=
29+19= 72-8=
24+27= 33-6=
7+49= 32-24=
75+19= 20-6=
22+38= 47-29=
25+48= 30-9=
49+47= 70-34=
45+14= 31-18=
33+26= 46-18=
13+21= 84-28=
64+14= 33-17=
18+41= 72-48=
21+62= 86-47=
32+26= 73-49=
34+68= 32-18=
29+47= 56-27=
58+29= 46-18=
19+49= 43-15=
63+29= 88-59=
72+18= 57-28=
52+48= 56-38=
42+29= 84-27=
15+48= 85-49=
69+22= 45-39=
36+27= 97-78=
54+19= 61-39=
15+48= 74-29=
53+39= 85-47=
66+29= 96-57=
14+77= 53-34=
45+38= 65-37=
58+29= 82-59=
47+25= 41-16=
33+19= 32-17=
16+15= 13-8=
78+18= 57-18=
35+47= 54-27=
24+48= 53-37=
26+56= 42-26=
58+14= 35-28=
35+27= 32-19=
14+49= 87-28=
25+35= 74-47=
16+25= 43-26=
45+17= 64-28=
28+39= 38-19=
18+36= 45-26=
35+45= 73-25=
17+44= 55-38=
28+32= 44-27=
57+24= 84-69=
27+63= 25-16=
59+25= 90-76=
13+78= 35-18=
35+28= 37-19=
14+29= 72-46=
24+17= 82-29=
28+58= 54-47=
26+47= 44-35=
27+28= 68-39=
47+29= 32-18=
16+38= 52-27=
26+27= 45-32=
27+24= 93-61=
18+23= 78-64=
72+38= 25-15=
47+26= 37-27=
75+17= 74-29=
17+24= 54-39=
58+28= 63-29=
15+16= 59-39=
29+47= 37-26=
25+59= 32-17=
19+17= 67-45=
78+13= 82-37=
28+35= 55-17=
84+17= 64-48=
29+14= 43-24=
17+23= 60-28=
46+37= 73-45=
27+13= 66-49=
16+38= 53-27=
28+19= 84-69=
19+41= 90-39=
25+48= 45-27=
52+28= 72-35=
36+17= 62-45=
34+59= 70-47=
27+43= 32-14=
15+38= 66-27=
36+29= 41-16=
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