题目
计算
(1)
4.7-3.4+(-8.3)
(2)
(3)
(4)
答案: 解:4.7-3.4+(-8.3), =4.7-3.4-8.3, =1.3-8.3, =-7;
解: (0.25−29)×(−36) , = 14×(−36)−29×(−36) , = −9+8 , =-1;
解: −22÷(−4)3−(12)3 , = −4÷(−64)−18 , = 116−18 , = −116 ;
解: −103−[(−12)2−(3−0.75)]×|−5| , = −103−[14−3+34]×5 , = −103−(−2)×5 , = −103+10 , = −203 .