题目内容

脱式计算.
67.6÷13+8×2
35÷
7
8
×1-
2
7

5
6
×(
2
9
÷
5
6
+
5
6
(1)67.6÷13+8×2,
=5.2+16,
=21.2;

(2)35÷
7
8
×1-
2
7

=35×
8
7
×1-
2
7

=40-
2
7

=39
5
7


(3)
5
6
×(
2
9
÷
5
6
+
5
6
),
=
5
6
×(
2
9
×
6
5
+
5
6
),
=
5
6
×(
4
15
+
5
6
),
=
5
6
×(
16
60
+
50
60

=
5
6
×
11
10

=
11
12
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