题目内容
计算:
(1)
×
=______;(2)
×(-
)=______;
(3)
=______;(4)
=______.
(1)
| 7 |
| 7 |
| 2 |
| 3 |
(3)
| 2000 |
| (-16)×9×(-81) |
(1)
×
=
=7;
(2)
×(-
)=-
=-
;
(3)
=
=
×
=20
;
(4)
=
=
×
×
=4×3×9=108.
| 7 |
| 7 |
| 7×7 |
(2)
| 2 |
| 3 |
| 2×3 |
| 6 |
(3)
| 2000 |
| 400×5 |
| 400 |
| 5 |
| 5 |
(4)
| (-16)×9×(-81) |
| 16×9×81 |
| 16 |
| 9 |
| 81 |
练习册系列答案
相关题目