计算下面各题。(1)-+(2)+-(3)1---(4)-(-)(5)6--(6)+-+-五年级数学

题文

计算下面各题。
(1)-+ (2)+- (3)1---
(4)-(- (5)6-- (6)+-+
题型:计算题  难度:中档

答案

(1)原式=+-
                =-
                =
(2)原式=(3+-
                =×
                =
(3)原式=1-(++
                =1-
                =
(4)原式=+-
                =2-
                =1
(5)原式=6-(+
                =6-1
                =5
(6)原式=-++
                =