12-8= 57+3= 62+30= 52-20+9=

6+56= 8+8= 13-6= 86―6―7=

18+9= 86-40= 20+50= 8+53+7=

68-5= 23-7= 70-6= 43+40-5=

25+8= 5+29= 72-8= 65-50+17=

55-3= 52+30= 75-7= 6+80-9=

32+43= 63-40= 35+5= 45―8―9=

55-8= 38+9= 6+47= 50-30+78=

43-4= 7+33= 27-9= 34+2+8=

56+3= 22+55= 81-9= 20-7+40=

15-7= 100-30= 66+9= 8+40-3=

94-6= 38+4= 18+3= 51―7―8=

68+5= 63-20= 39+5= ( )+34=40

45-9= 7+64= 42+4= 56-( )=12

56+7= 36+3= 11-3= 45+( )=66

58+36= 87-59= 75+27= 68-19=

38+59= 78-49= 67+25= 57-38=

46+46= 64-57= 29+47= 67-59=

16+67= 54-48= 54+46= 71-65=

54+36= 48-39= 49+49= 91-85=

36+14= 25+41= 79-64= 19+21=