问题 解答题
怎样简便就怎样算.
4.3+0.98+0.7=5.27-3.9-0.1=
8.44-(5.44+2.8)=4.9+0.1-4.9+0.1=
答案

(1)4.3+0.98+0.7,

=(4.3+0.7)+0.98,

=5+0.98,

=5.98;

(2)5.27-3.9-0.1,

=5.27-(3.9+0.1),

=5.27-4,

=1.27;

(3)8.44-(5.44+2.8),

=8.44-5.44-2.8,

=3-2.8,

=0.2;

(4)4.9+0.1-4.9+0.1,

=4.9-4.9+0.1+0.1,

=0+0.1+0.1,

=0+0.1+0.1,

=0.2.

选择题
多项选择题