数学的简便算吧是什么2000-416-284······················
问题描述:
数学的简便算吧是什么
2000-416-284······················
答
2000-(416+284)
=2000-700
=1300
答
2000-(416+284)=2000-700=1300
答
由2000-416-284.
=2000-(416+284).
=2000-700..
=1400.
如果后面还有加,减运算,方法相同.
答
先将416+284=700,再用2000-700=1300.
即2000-(416+284)=1300.