计算:7.816×1.45+3.14×2.184+1.69×7.816=______.
计算:7.816×1.45+3.14×2.184+1.69×7.816=______.
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.
用简便方法计算:-3.14×35.2+6.28×(-23.3)-1.57×36.4=______.
利用因式分解计算32×3.14+5.4×31.4+0.14×314=______.