问题 解答题
递等式计算(能简算的要简算)
(8.5-4)×(0.32÷1.6)
90.7×99+90.7
7
15
×9-6÷
15
7
13
18
÷(
5
6
+
2
3
×
3
8
答案

(1)(8.5-4)×(0.32÷1.6)

=4.5×0.2,

=0.9;

(2)90.7×99+90.7

=(99+1)×90.7,

=100×90.7,

=9070;

(3)

7
15
×9-6÷
15
7

=

7
15
×9-6×
7
15

=(9-6)×

7
15

=3×

7
15

=

7
5

(4)

13
18
÷(
5
6
+
2
3
×
3
8

=

13
18
÷(
5
6
+
1
4
),

=

13
18
÷(
10
12
+
3
12
),

=

13
18
×
12
13

=

2
3

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