题目内容

计算:
(1)(-2)×
5
4
×(-
9
10
)×(-
2
3
)
;(2)(-6)×5×(-
7
6
2
7

(3)(-4)×7×(-1)×(-0.25);(4)(-
5
24
8
15
×(-
3
2
1
4
(1)(-2)×
5
4
×(-
9
10
)×(-
2
3
)
=-(2×
5
4
×
9
10
×
2
3
)=-
3
2

(2)(-6)×5×(-
7
6
2
7
=6×
7
6
×
2
7
=10

(3)(-4)×7×(-1)×(-0.25)=-(4×7×1×
1
4
)=-7;
(4)(-
5
24
8
15
×(-
3
2
1
4
=
5
24
×
8
15
×
3
2
×
1
4
=
1
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