问题 解答题
脱式计算.(能简算的要简算)
2
9
÷
8
27
×
2
15

②(
1
4
+
3
10
)÷
3
4

5
6
×
1
4
+
1
6
÷4
④1836÷[56×(
4
7
-
1
4
)].
答案

2
9
÷
8
27
×
2
15

=

2
9
×
27
8
×
2
15

=

1
10

②(

1
4
+
3
10
)÷
3
4

=(

1
4
+
3
10
)×
4
3

=

1
4
×
4
3
+
3
10
×
4
3

=

1
3
+
2
5

=

11
15

5
6
×
1
4
+
1
6
÷4,

=

5
6
×
1
4
+
1
6
×
1
4

=(

5
6
+
1
6
)×
1
4

=1×

1
4

=

1
4

④1836÷[56×(

4
7
-
1
4
)],

=1836÷[56×

4
7
-56×
1
4
],

=1836÷[32-14],

=1836÷18,

=102.

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