"467-279等于几"...467-279等于几

　"467-387等于几"...467-387等于几

　"278+476等于几"...278+476等于几

　"467-288等于几"...467-288等于几

　"467-267等于几"...467-267等于几

　"436+278等于几"...436+278等于几

　"467+467等于几"...467+467等于几

　"278+546等于几"...278+546等于几

　"478-326等于几"...478-326等于几

　"467+533等于几"...467+533等于几