文档介绍：4+35= 35+4= 42+40= 3+56=
24+8= 36+5= 6+4= 5+8=
9+7= 26+4= 5+38= 9+17=
46+4= 5+48= 9+37= 8+35=
14+6= 35+3= 2+
56+30=
3+56=
25+3=
93-20=
68-20=
75-3=
46-6=
56-3=
44-30=
57-6=
75-3=
20+5=
70+3=
21+7=
30+28=
53+5=
4+32=
40+12=
3+34=
20+78=
31+23=
39-20=
48-3=
75+3=
73-50=
72-20=
58-40=
47-6=
75+4=
50+1=
21+70=
46+2=
46+2=
46+3=
50+49=
45+4=
38+20=
25+30=
54-30=
77-40=
59-30=
26-4=
87-4=
27-7=
48-3=
59-30=
56-30=
34-3= 87-6= 74-2= 78-60=
34-30= 78-6= 74+2= 75-3=
88-5= 56-4= 89-7= 46-20=
69-40= 47-3= 38-7= 84-4=
63-60= 49-4= 94-70= 39-3=
71-30=
47-3=
32-30=
47-4=
75-30=
86-50=
28-6=
39-8=
36+23=
78+35=
68-5=
67-37=
74-30=
69-7=
38-11=
75-4=
4+65=
78-5=
57-30=
78-20=
65-4=
74-20=
68-50=
74-30=
47-3=
43-30=
87+35=
64+32=
4+23=
78-46=
35-32=
5+74=
75+4=
46-30=
57-35=
87-40=
49-5=
47-5=
53-50=
86-5=
47-30=
74-50=
98-20=
38-20=
65+24=
32+53=
35+42=
45+32=
38-7=
63-41=
46+30=
69-20=
88-63=
76-3=
97-60=
48-5=
68-5=
74-3=
75-40=
57-30=
89-60=
12+45=
42+40=
67-42=
43+54=
76-56=
26+63=
54-42=
20+69=
32+37=
58+20=