题目
计算.
(1)
(2)
(3)
×[-32÷(- )2+(-2)3]
(4)
答案: 解: −3+8−7−15 = 8−25 =-17
解: −212+12÷(−2)×|−83| = −212−12×12×83 = −52−23 = −156−46 = −196
解: |−32| ×[-32÷(- 32 )2+(-2)3] = 32×(−9×49−8) = 32×(−4−8) = 32×(−12) =-18
解: (23−56−78+112)×(−24) = −23×24+56×24+78×24−112×24 =-16+20+21-2 =41-18 =23