题目内容

计算下列各题.(能简算的要简算)
17
24
×
3
4
+
17
24
÷4
1
2
×3.2+5.6×0.5+1.2×50%
510÷[42×(
5
6
-
3
7
)]
15
16
+(
7
16
-
1
4
1
2

(1)
17
24
×
3
4
+
17
24
÷4

=
17
24
×
3
4
+
17
24
×
1
4

=
17
24
×(
3
4
+
1
4
)

=
17
24
×1,
=
17
24


(2)
1
2
×3.2+5.6×0.5+1.2×50%

=0.5×3.2+5.6×0.5+1.2×0.5,
=0.5×(3.2+5.6+1.2),
=0.5×10,
=5;

(3)510÷[42×(
5
6
-
3
7
)]

=510÷[42×
5
6
-42×
3
7
]

=510÷[35-18],
=510÷17,
=30;

(4)
15
16
+(
7
16
-
1
4
1
2

=
15
16
+
3
16
÷
1
2

=
15
16
+
3
8

=
21
16
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