题目内容

计算:
(1)
7
×
7
=______;(2)
2
×(-
3
)=______;
(3)
2000
=______;(4)
(-16)×9×(-81)
=______.
(1)
7
×
7
=
7×7
=7;

(2)
2
×(-
3
)=-
2×3
=-
6


(3)
2000
=
400×5
=
400
×
5
=20
5


(4)
(-16)×9×(-81)
=
16×9×81
=
16
×
9
×
81
=4×3×9=108.
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