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计算:-6÷(-0.25)×;
计算:(-4)×1.25×(-8);
计算:(1)(-25)÷(-5)________
(2)0÷(-20)=________
(3)________;
(4)=________;
计算:
(1)(10)÷(-8)÷(-0.25);
(2);
(3);
计算:19972×0= ; 48÷(-6) = ;
-×(-) = ; -1.25÷(-) = .