46÷2=23, 6×40=240, 72-38=34, 25+57=82, 1300-900=400,
4×21=84, 45+65=110, 80÷2=40, 93÷3=31, 170-80=90,
68+17=85, 50-26=24, 58+27=85, 31-25=6, 700+600=1300.
46÷2=23, 6×40=240, 72-38=34, 25+57=82, 1300-900=400,
4×21=84, 45+65=110, 80÷2=40, 93÷3=31, 170-80=90,
68+17=85, 50-26=24, 58+27=85, 31-25=6, 700+600=1300.