问题 解答题
神机妙算你最棒!(计算下面的题,能简算的要简算,写出简算步骤)
①(5906-325×18)÷1.4
1
99
×88+11×
1
99

③5×(
3
20
+
1
15
)-
3
4

④4÷[
5
6
×(
2
5
-
1
10
].
答案

①(5906-325×18)÷1.4

=(5906-5850)÷1.4,

=56÷1.4,

=40;

1
99
×88+11×
1
99

=(88+11)×

1
99

=99×

1
99

=1;

③5×(

3
20
+
1
15
)-
3
4

=5×

3
20
+5×
1
15
-
3
4

=

3
4
+
1
3
-
3
4

=

3
4
-
3
4
+
1
3

=

1
3

④4÷[

5
6
×(
2
5
-
1
10
]

=4÷[

5
6
×
3
10
],

=4÷

1
4

=16.

问答题 简答题
问答题 简答题