468+356=?,298+411=?,950+721=?
734-61=?,907-696=?,1389-729=?
44+?=843,230+?=759,1255+?=1691
18*7=?,9*105=?,864*5=?
423/3=?,920/8=?,1362/6=?
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?-267=855-460,111+171+476+314=?
710-259=?+361,559+541+336-1230=?
215+?+344=943,1030+525-740-685=?
229+?-555=432,1925-612-592-496=?
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