计算:347×69+653×31+306×19=______.
计算:347×69+653×31+306×19=______.
计算19+299+3999+49999=______.
计算:5002-499×501=______.
计算:1232-122×124=______.
计算:1001×1001-1001=______.
简便计算:101×99=______.
计算:888×999=______.
计算:lg2+lg5=______.
计算:1.996+19.97+199.8=______.
计算5.762-4.242=______.
计算:57.32°=______度______分______秒.
计算:48°39′+67°31′=______.