40+70= 130-70= 58-36= 27+56=
93-39= 46+45= 67+24= 80-25=
68+17= 71-24= 900+700= 39+43=
1100-500= 6400-6000= 25+57= 1300-600=
65-29= 39+37= 1200-800= 82-34=
93-39= 46+45= 67+24= 80-25=
68+17= 71-24= 900+700= 39+43=
1100-500= 6400-6000= 25+57= 1300-600=
65-29= 39+37= 1200-800= 82-34=