问题
填空题
填空: (1)(-27)÷9=______;(2)(-
(3)1÷(-9)=______;(4)0÷(-7)=______; (5)
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答案
(1)(-27)÷9=-3;
(2)原式=(-
)×(-9 25
)=10 3
;6 5
(3)原式=1×(-
)=-1 9
;1 9
(4)0÷(-7)=0;
(5)原式=
×(-1)=-4 3
;4 3
(6)原式=-
×1 4
=-4 3
.1 3