问题 解答题
脱式计算.(能简算的要简算)
3
16
+
1
24
)×8+
2
3
4.5-(
3
7
+1.5)-
4
7
2
3
+
6
7
×
7
24
)÷
11
32
9
20
÷[
1
2
×(
2
5
+
4
5
)].
答案

(1)(

3
16
+
1
24
)×8+
2
3

=

3
16
×8+
1
24
×8+
2
3

=

3
2
+
1
3
+
2
3

=

3
2
+(
1
3
+
2
3
),

=

3
2
+1,

=2

1
2

(2)4.5-(

3
7
+1.5)-
4
7

=4.5-

3
7
-1.5-
4
7

=(4.5-1.5)-(

3
7
+
4
7
),

=3-1,

=2;

(3)(

2
3
+
6
7
×
7
24
)÷
11
32

=(

2
3
+
1
4
)÷
11
32

=

11
12
÷
11
32

=

8
3

(4)

9
20
÷[
1
2
×(
2
5
+
4
5
)],

=

9
20
÷[
1
2
×
6
5
],

=

9
20
÷
3
5

=

3
4

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