有理数加减混合运算习题(一)1.将下列各式写成省略加号的和的形式,并合理交换加数的位置
(1)(+16)+(-29 )- (+11)+(+9)= ;(2)(-3
1 ) -(-4
5) + (+4
4) - (+103) + (-2
5) = ;(3)(+21 )-5+ (-31 )- (+41 )+( -32 ) = ;(4)(-2
6 ) - (4
7 )- (+0
5 )+(+2
4 )+(-3
2 )= ;2.计算:(1)- 5-9+3 (2) 10-17+8 (3)- 3-4+19-11 (4)- 8+12- 16-23 (3)- 3-4+19-11 (4)-8+12-16-23 ( 5)(+3
41 )-(- 0
59 )(6)75137413 (7)— 9+(— 343 )+343 (8)-4
4+10 (9)6
8 13231)10(21326541)11((12)(— 36)—(— 25)—( +36)+( +72)(13)(— 8)—(— 3)+(+5)—( +9)(14)(— 8)—(— 3)+(+5)—( +9)(15))32()41()61(21(16)5
1;(17)4
7 -(- 8
9 )- 7
5+ (- 6)(18)( -0
6 )+( - 1
7 )+( - 9 ) (19));7412(7312653431615413(20)()()()()()1141211453314294163(21) [1
2]-(-1
5)(22) ()()[()()]325611438143( 23)4553186()() (24) (-32 )+(+0
25)+(-61 )-(+21 ) (25) (+353 )+(+443 )-(+152