问题 解答题
简便计算
13.4-(3.4+0.33)
0.75×
4
7
+
10
7
×
3
4
答案

(1)13.4-(3.4+0.33),

=13.4-3.4-0.33,

=10-0.33,

=9.67;

(2)0.75×

4
7
+
10
7
×
3
4

=0.75×

4
7
+
10
7
×
0.75,

=0.75×(

4
7
+
10
7
),

=0.75×2,

=1.5.

单项选择题
单项选择题