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
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