问题
计算题
利用简便方法计算:
(1)23×2.718+59×2.718+18×2.718
(2)57.6×1.6+57.6×18.4+57.6×(-20)
答案
(1)原式=2.718×(23+59+18)=271.8
(2)原式=57.6×(1.6+18.4-20)=0
利用简便方法计算:
(1)23×2.718+59×2.718+18×2.718
(2)57.6×1.6+57.6×18.4+57.6×(-20)
(1)原式=2.718×(23+59+18)=271.8
(2)原式=57.6×(1.6+18.4-20)=0