13﹣9=
70+2=
15﹣7=
11﹣4=
14﹣9+6=
7+12=
95﹣90=
8+30=
68﹣8=
65﹣60+9=
11-3=
25-5=
14-6+4=
53-3=
8+70=
13-9+10=
66-60=
19-7=
73-70+14=
= (个) = (个)
40+30+8=
90-10-60=
26+40-4=
87-70+3=
63-(14+6)=
53-(37-7)=
44+33=
27+12=
47-25=
92-81=
41+48=
88-38=
85-40=
20+80=
59-50=
37+13=
50-7=
45-6=
5+37=
78+20=
38+9=
28-9+40=
45-40+32=
28-10+9=
25+9-6=
24-4= 10+8= 14-9= 9+8=
67-7= 80+6= 10-6= 12-7=
8+8-10= 68-60+6= 46-6+3=
15-( )=8 10-( )=7 7+( )=47
20+7 81-3 64+7 42-40 37-2
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