6.28—(3.76+1.28)的简便计算
问题描述:
6.28—(3.76+1.28)的简便计算
答
6.28—(3.76+1.28)
=6.28—(3.76+1.24+0.04)
=6.28—(5+0.04)
=6.28—5—0.04
=1.28—0.04
=1.24