计算: (1)(-18)÷0.6; (2)-25.6÷(-0.064); (3)
(4)-3
(5)-0.25÷
(6)-
|
(1)(-18)÷0.6=-18×
=-30; 5 3
(2)-25.6÷(-0.064)=
=400; 25600 64
(3)
÷(-1)=-4 5
;4 5
(4)-3
÷1 7
=-11 12
×22 7
=-12 11
; 24 7
(5)-0.25÷
=-3 8
×1 4
=-8 3
; 2 3
(6)-
÷(-1.5)=-1 4
×(-1 4
)=2 3
.1 6