67+967+7 25+934 46-755
40+20 = 94+6 = 5×8 = 9×2 =
3×3-3 = 7×5 = 6×6 = 8×9 =
30+10-9= 50+30+8=
过一刻是
过5分是
过半小时是
3× =×
×4<29 40>×9 6× <55