有理数加减法计算题

本溪县第二中学七年提出数学有理数加减复习方案1、计算：(1)3-8 (2)-4 7 (3)-6-9 (4)8-12(5)-15 7 (6)0-2 (7)-5-9 3 (8)10-17 8(9)-3-4 19-11 (10)-8 12-16-23(11)-4.2 5.7-8.4 10；(12)6.1-3.7-4.9 1.8； (13)- 1 (14)- -(15 )-216-157 348 512-678 (16 ) 81.26-293.8 8.74 111；(17)-4 1-17-2； (十八) 2.253- 12-8(19)12-(-18) (-7)-15； (20)-40-28-(-19) (-24)-(-32 )(21 ) 4.7-(-8.9 )-7.5 (-6 ) (22 )-(-) -；(23)-4 (24)5-10.8 (25)0.12-0.54-；(26)-4.72 16.42-5.28 (27) (28 )(29) (30) (31)23-17-(-7) (-16 )(32 ) (-1(33 ) (-26.54 ) (-6.4 )-18.54.6.4 )(34 ) (-4 )-(-5 ) (-4 )-3 (35 ) (6.1 )-(-4.3 ) (-2.1 )-5.7 )(36) -3.4 4.7-8.35 (37) (38 )(39)0.36 (-7.4) 0.3 (-0.6) 0.64； (40)9 (-7) 10 (-3) (-9 )答案： (1)-5 (2)3(3)-15 (4)-4 (5)-8 (6)-2 (7)-11(8)1(9)1(10)-352 (11) 3.1 (12)-0.7 (13) (14 )(15 )-191 (16 )-92.8 (17 )-22 (18 )-14 (19 )8(20 )-41 (21 ) 0.1(22 )-1 (23 )3(24 )-5.3 (25 )-0.57 (26 ) 6.42 (27 ) (28 )(29 ) (30 )0(31 )-3 (32 )-(33 )-45.08 (34 )-6 (35 ) 2.6(36 )-7.05 (37 ) (38 ) 3.5 (39 )-6.7 (40 ) 0答案： (1)-5 (2)3(3)-15 (4)-4 (5)-8 (6)-2 (7)-11(8)1(9)1(10)-352 (11) 3.1 (12)-0.7 (13) (14 )(15 )-191 (16 )-92.8 (17 )-22 (18 )-14 (19 )8(20 )-41 (21 ) 0.1(22 )-1 (23 )3(24 )-5.3 (25 )-0.57 (26 ) 6.42 (27 ) (28 )(29 ) (30 )0(31 )-3 (32 )-(33 )-45.08 (34 )-6 (35 ) 2.6(36 )-7.05 (37 ) (38 ) 3.5 (39 )-6.7 (40 ) 0答案： (1)-5 (2)3(3)-15 (4)-4 (5)-8 (6)-2 (7)-11(8)1(9)1(10)-352 (11) 3.1 (12)-0.7 (13) (14 )(15 )-191 (16 )-92.8 (17 )-22 (18 )-14 (19 )8(20 )-41 (21 ) 0.1(22 )-1 (23 )3(24 )-5.3 (25 )-0.57 (26 ) 6.42 (27 ) (28 )(29 ) (30 )0(31 )-3 (32 )-(33 )-45.08 (34 )-6 (35 ) 2.6(36 )-7.05 (37 ) (38 ) 3.5 (39 )-6.7 (40 ) 0答案： (1)-5 (2)3(3)-15 (4)-4 (5)-8 (6)-2 (7)-11 (8) 1(9)1(10)-352 (11 ) 3.1 (12 )-0.7 (13 )、(14 )、(15 )-191 (16 )-92.8 (17 )-22 (18 )-14 (20 )-41 (21 ) 0.1 (22 )-1 (23