问题 解答题
计算,能简算的要简算.
①23-
12
17
-
5
17

②(3618÷18-145)×20
③4.6×
11
8
+8.4÷
8
11
-
11
8
×5.
答案

①23-

12
17
-
5
17

=23-(

12
17
+
5
17
),

=23-1,

=22;

②(3618÷18-145)×20,

=(201-145)×20,

=56×20,

=1120;

③4.6×

11
8
+8.4÷
8
11
-
11
8
×5,

=4.6×

11
8
+8.4×
11
8
-
11
8
×5,

=(4.6+8.4-5)×

11
8

=8×

11
8

=11.

实验题
单项选择题