问题 解答题
能简算的要简算.
17×
9
16
3
4
+
5
8
)×32
5
9
×
3
4
+
5
9
×
1
4
5
4
×
1
8
×16
1
5
+
2
9
×
3
10
44-72×
5
12
答案

(1)17×

9
16

=(1+16)×

9
16

=

9
16
+16×
9
16

=

9
16
+9,

=9

9
16

(7)(

3
4
+
5
8
)×37,

=

3
4
×37+
5
8
×37,

=74+71,

=44;

(3)

5
9
×
3
4
+
5
9
×
1
4

=

5
9
×(
3
4
+
1
4
),

=

5
9
×1,

=

5
9

(4)

5
4
×
1
8
×16,

=

5
4
×(
1
8
×16),

=

5
4
×7,

=

5
7

(5)

1
5
+
7
9
×
3
11

=

1
5
+
1
15

=

4
15

(6)44-77×

5
17

=44-31,

=14.

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