789+24-50=
960-70+120=
43-12+8-15=
265+80-40-110=
89+1.100+340-29=
1.870-430+2.000=
102-57+45=
300+560+730-480=
736-208+598=
2.340+175-1487=
65+6.500-465=
3.800-127-1.007=
87+144+810-50=
10.987+260-930=
229.040-9.030+556=
575+595-269=
8.642+891-33=
307-111+2.562=
54+495+64-228=
129-87+3.640-55=