1. 26鈪40绠渚胯繍绠楋纻
锲犱负26=25+1锛屾墍浠ュ师寮忕瓑浜40脳锛25+1锛夎繍鐢ㄤ箻娉曞垎閰嶅緥灏辨槸链40脳25+40脳1=1000+40=1040
2. 41x26 159x26绠渚挎庝箞鍐
41x26+159x26=(41+159)x26=200x26=5200