问题 解答题
计算,能简算的要简算
112-12×
5
4
3
4
+
5
8
)×32
25×
9
16
+9×
7
16
5
4
×
1
8
×16
1
5
+
2
9
×
3
10
17×
9
16
答案

(1)112-12×

5
4

=112-15,

=97;

(2)(

3
4
+
5
8
)×32,

=

3
4
×32+
5
8
×32,

=24+20,

=44;

(3)25×

9
16
+9×
7
16

=25×

9
16
+7×
9
16

=(25+7)×

9
16

=32×

9
16

=18;

(4)

5
4
×
1
8
×16,

=

5
4
×(
1
8
×16),

=

5
4
×2,

=

5
2

(5)

1
5
+
2
9
×
3
10

=

1
5
+
1
15

=

4
15

(6)17×

9
16

=(16+1)×

9
16

=16×

9
16
+1×
9
16

=9+

9
16

=9

9
16

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