来自梁瑞鑫的问题
计算:347×69+653×31+306×19=______.
计算:347×69+653×31+306×19=______.
1回答
2020-03-22 20:31
计算:347×69+653×31+306×19=______.
计算:347×69+653×31+306×19=______.
347×69+653×31+306×19,
=347×(50+19)+653×(50-19)+306×19,
=347×50+347×19+653×50-653×19+306×19,
=(347+653)×50+(347+306-653)×19,
=1000×50+0×19,
=50000.
故答案为:50000.