题目

计算: (1) (2) (3) (4) (5) (6) 答案:解: (−13)+(−7)−(+20)−(−40) 解:原式 =−20−20+40 =0 解: (+56)+(−23)+(+116)+(−13) 解:原式 =56−23+76−13 =2−1 =1 解: (−56)×(−312)÷(−114)÷3 解:原式 =−56×72×45×13 =−79 解: (−8)÷23×(−112)÷(−9) 解:原式 =−8×32×32×19 =−2 解: [(−112)+(−412)]÷(−4)÷(−13) 解:原式 =−6×14×3 =−92 解:Be an expert at mine sweeping! They can make a word but with an excessive one among them, please find this excessive one and colour it red
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