计算:(1)-20+(-14)-(-18)-13;(2)(-34-59+712)÷136;(3)-1-(-512)×411-(-8)÷|-3+1|;(4)-14+[1124-(38+16-34)×24]÷5.-数学
题文
计算: (1)-20+(-14)-(-18)-13; (2)(-
(3)-1-(-5
(4)-14+[1
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答案
(1)-20+(-14)-(-18)-13 =-20-14+18-13 =-47+18 =-29; (2)(-
=(-
=-
=-27-20+21 =-26; (3)-1-(-5
=-1+2+8÷2 =-1+2+4 =5; (4)-14+[1
=-1+[1
=-1+6
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