题目内容

计算下面各题,能简算的要简算.
(1)772-317+128-283 (2)(
11
12
-
3
4
)÷(2-
1
2

(3)(
1
4
+
1
6
+
5
12
)×36(4)120÷[45×(1-
8
9
)].
(1)772-317+128-283
=772+128-(317+283)
=900-600
=300;
(2)(
11
12
-
3
4
)÷(2-
1
2

=
1
6
÷
3
2

=
1
6
×
2
3

=
1
9

(3)(
1
4
+
1
6
+
5
12
)×36
=
1
4
×36+
1
6
×36+
5
12
×36
=9+6+15
=30;
(4)120÷[45×(1-
8
9
)]
=120÷[45×
1
9
]
=120÷5
=24.
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