"204+2等于几"...204+2等于几

　"2049-2等于几"...2049-2等于几

　"204+205等于几"...204+205等于几

　"204-28等于几"...204-28等于几

　"204+302等于几"...204+302等于几

　"204-156等于几"...204-156等于几

　"204-57等于几"...204-57等于几

　"204+1等于几"...204+1等于几

　"204+447等于几"...204+447等于几

　"204-6等于几"...204-6等于几