题目内容

填空:
(1)5×(-4)=______;(2)(-6)×4=______;(3)(-7)×(-1)=______;
(4)(-5)×0=______;(5)
4
9
×(-
3
2
)=______;(6)(-
1
6
)×(-
2
3
)
=______;
(7)(-3)×(-
1
3
)=______.
(1)5×(-4)=-20;
(2)(-6)×4=-24;
(3)(-7)×(-1)=7;
(4)(-5)×0=0;
(5)
4
9
×(-
3
2
)=-
2
3

(6)(-
1
6
)×(-
2
3
)
=
1
9

(7)(-3)×(-
1
3
)=1.
故答案为:-20;-24; 7; 0;-
2
3
1
9
;1.
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