初中数学试卷 灿若寒星整理制作 有理数的加减法——计算题练习 1 、加法计算(直接写出得数,每小题 1 分): (1 ) (-6 )+(-8 )= (2 ) (-4 )+2
5 = (3 ) (-7 )+(+7 )= (4 ) (-7 )+(+4 )= (5 ) (+2
5 )+(-1
5 )= (6 ) 0 +(-2 )= (7 ) -3 +2 = (8 ) (+3 )+(+2 )= (9 ) -7 -4 = (1 0 ) (-4 )+6 = (1 1 ) 31 = (1 2 ) aa = 2 、减法计算(直接写出得数,每小题 1 分): (1 ) (-3 )-(-4 )= (2 ) (-5 )-1 0 = (3 ) 9 -(-2 1 )= (4 ) 1
3 -(-2
7 )= (5 ) 6
3 8 -(-2
6 2 )= (6 ) -2
5 = (7 ) 1 3 -(-1 7 )= (8 ) (-1 3 )-(-1 7 )= (9 ) (-1 3 )-1 7 = (1 0 ) 0 -6 = (1 1 ) 0 -(-3 )= (1 2 ) -4 -2 = (1 3 ) (-1
8 )-(+4
5 )= (1 4 ) 1143 = (1 5 ) 1( 6
2 5 )3 4 = 3 、加减混合计算题(每小题 3 分): (1 ) 4 +5 -1 1 ; (2 ) 2 4 -(-1 6 )+(-2 5 )-1 5 (3 ) -7
4 +1 2 (4 ) -3 -5 +7 (5 ) -2 6 +4 3 -3 4 +1 7 -4 8 (6 ) 9 1
2 6 -2 9 3 +8
7 4 +1 9 1 (7 ) 1 2 -(-1 8 )+(-7 )-1 5