问题 解答题
计算(能简算的要简算).
5
6
÷(1-
3
4
)×
3
4
1
5
×
6
11
+20%×
5
11
9
16
÷(
3
8
+
1
16
5
6
+
16
17
)×
1
8
+
15
17
答案

(1)

5
6
÷(1-
3
4
)×
3
4

=

5
6
÷
1
4
×
3
4

=

5
6
×(4×
3
4
),

=

5
6
×3,

=

5
2

(2)

1
5
×
6
11
+20%×
5
11

=

1
5
×
6
11
+
1
5
×
5
11

=

1
5
×(
6
11
+
5
11
),

=

1
5
×1,

=

1
5

(3)

9
16
÷(
3
8
+
1
16
),

=

9
16
÷
7
16

=

9
7

(4)(

5
6
+
16
17
)×
1
8
+
15
17

=

5
6
×
1
8
+
16
17
×
1
8
+
15
17

=

5
48
+
2
17
+
15
17

=

5
48
+(
2
17
+
15
17
),

=

5
48
+1,

=1

5
48

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