有理数加减法计算题(含答案). 下载本文

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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;

(15)-216-157+348+512-678; (17)-4

23+11112-171174-218;

(19)12-(-18)+(-7)-15;

(21)4.7-(-8.9)-7.5+(-6);

(13)13-23+1; (14)-15214+6+3-2; (16)81.26-293.8+8.74+111; (18)2.25+334-125312-88; (20)-40-28-(-19)+(-24)-(-32);

(22)-23+(-1116)-(-4)-2; 1113(23)-4?7; (24)5-10.8; (25)0.12-0.54-;

33202

2513(?2)(?)(26)-4.72+16.42-5.28 (27)3?; (28)?; 7734

(?1.2)?(?1) (31)23-17-(-7)+(-16) (29)(?3)?(?2); (30)

143415 (32) (34)(-4

123?1??1?(36) -3.4+4.7-8.35; (37)?? (38)0.5???????2.75?????

755?4??2?211+(-)-1+ (33)(-26.54)+(-6.4)-18.54+6.4 3537111)-(-5)+(-4)-3 (35)(+6.1)-(-4.3)+(-2.1)-5.7 8248

(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) (15)-191 (16)-92.8 (17)-22

23 (14) 341719 (18)-14 (19) 8 (20)-41 (21)0.1

2418145(22)-1 (23)3 (24)-5.3 (25)-0.57 (26)6.42 (27) ; (28)?;

1271213(29)?6; (30)0 (31)-3 (32)- (33)-45.08 (34)-6 (35)2.6

5412 (36) -7.05; (37) ; (38)3.5 (39)-6.7; (40)0;

35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) (15)-191 (16)-92.8 (17)-22

23 (14) 341719 (18)-14 (19) 8 (20)-41 (21)0.1

2418145(22)-1 (23)3 (24)-5.3 (25)-0.57 (26)6.42 (27) ; (28)?;

1271213(29)?6; (30)0 (31)-3 (32)- (33)-45.08 (34)-6 (35)2.6

5412 (36) -7.05; (37) ; (38)3.5 (39)-6.7; (40)0;

35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) (15)-191 (16)-92.8 (17)-22

23 (14) 341719 (18)-14 (19) 8 (20)-41 (21)0.1

2418145(22)-1 (23)3 (24)-5.3 (25)-0.57 (26)6.42 (27) ; (28)?;

1271213(29)?6; (30)0 (31)-3 (32)- (33)-45.08 (34)-6 (35)2.6

5412 (36) -7.05; (37) ; (38)3.5 (39)-6.7; (40)0;

35答案:(1)-5 (2)3 (3)-15 (4)-4 (5)-8 (6)-2 (7)-11 (8)1 (9)1 (10)-352

2317(11) 3.1 (12)-0.7 (13) (14) (15)-191 (16)-92.8 (17)-22

3418191(18)-14 (19) 8 (20)-41 (21)0.1 (22)-1 (23)3 (24)-5.3 (25)-0.57

2412451(26)6.42 (27) ; (28)?;(29)?6; (30)0 (31)-3 (32)- (33)

5712123-45.08 (34)-6 (35)2.6 (36) -7.05; (37) ; (38)3.5 (39)-6.7; (40)0;

435