题目内容

计算下列各题,能简算的要简算.
53
56
×57
5
12
÷
3
4
+
5
12
÷
1
4

3-
8
9
÷
5
6
×
3
16

12÷[(
7
9
-
2
3
9
10
]
53
56
×57
=
53
56
×(56+1)
=
53
56
×56+
53
56
×1
=53+
53
56

=53
53
56

5
12
÷
3
4
+
5
12
÷
1
4

=
5
12
×
4
3
+
5
12
×
4
1

=
5
12
×(
4
3
+
4
1

=
5
12
×5
1
3

=2
2
9

③3-
8
9
÷
5
6
×
3
16

=3-
8
9
×
6
5
×
3
16

=3-
1
5

=2
4
5

④12÷[(
7
9
-
2
3
)×
9
10
]
=12÷(
7
9
×
9
10
-
2
3
×
9
10

=12÷(
7
10
-
6
10

=12÷
1
10

=120.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网