题目
计算
(1)
|-45|×|+0.2|
(2)
5+(-32)÷(-2)
(3)
32÷(-4)×
(4)
( )2×22-(-5)
(5)
4×(-2)+(-3)÷( )
(6)
(-1)21-(1+0.5)×
答案: 解: |−4.5|×|+0.2| =45×0.2 =9
解: 5+(−32)÷(−2) =5+16 =21
解: 32÷(−4)×14 =−8×14 =2
解: (−12)2×22−(−5) =14×4+4 =1+5 =6
解: 4×(−2)+(−3)÷(−35) =−8+3×53 =-8+5 =-3
解: (−1)21−(1+0.5)×13 =−1−32×13 =−1−12 =−32