有理数加减法计算题(含答案)

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1、计算:

(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)31-32+1; (14)-41+65+32-2

1;

(15)-216-157+348+512-678; (16)81.26-293.8+8.74+111; (17)-4

32+11211-1741-21817; (18)2.25+343-1212

5

-883;

(19)12-(-18)+(-7)-15; (20)-40-28-(-19)+(-24)-(-32);

(21)4.7-(-8.9)-7.5+(-6); (22)-32+(-61)-(-41)-2

1

(23)-431731 ; (24)52

1-10.8; (25)0.12-0.54-203

;

(26)-4.72+16.42-5.28 (27))(752723-+; (28))

(4

3

31-+;

(29))432()41

3(-+-; (30))5

11(2.1++-)( (31)23-17-(-7)+(-16)

(32)3

2

+(-51)-1+31 (33)(-26.54)+(-6.4)-18.54+6.4

(34)(-487)-(-521)+(-44

1

)-381 (35)(+6.1)-(-4.3)+(-2.1)-5.7

(36) -3.4+4.7-8.35; (37)535271+- (38)()⎪⎭

⎝⎛++--⎪⎭⎫ ⎝⎛-+2175.2415.0

(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) 32 (14) 4

3 (15)-191 (16)-92.8 (17)-22

18

17

(18)-142419 (19) 8 (20)-41 (21)0.1

(22)-1121 (23)3 (24)-5.3 (25)-0.57 (26)6.42 (27)74 ; (28)12

5

-;

(29)6-; (30)0 (31)-3 (32)-51 (33)-45.08 (34)-64

3

(35)2.6

(36) -7.05; (37) 35

12

; (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) 32 (14) 4

3 (15)-191 (16)-92.8 (17)-22

18

17

(18)-142419 (19) 8 (20)-41 (21)0.1

(22)-1121 (23)3 (24)-5.3 (25)-0.57 (26)6.42 (27)74 ; (28)12

5

-;

(29)6-; (30)0 (31)-3 (32)-51 (33)-45.08 (34)-64

3

(35)2.6

(36) -7.05; (37) 35

12

; (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) 32 (14) 4

3 (15)-191 (16)-92.8 (17)-22

18

17

(18)-142419 (19) 8 (20)-41 (21)0.1

(22)-1121 (23)3 (24)-5.3 (25)-0.57 (26)6.42 (27)74 ; (28)12

5

-;

(29)6-; (30)0 (31)-3 (32)-51 (33)-45.08 (34)-64

3

(35)2.6

(36) -7.05; (37) 35

12

; (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)

32 (14) 43 (15)-191 (16)-92.8 (17)-2218

17 (18)-142419 (19) 8 (20)-41 (21)0.1 (22)-112

1

(23)3 (24)-5.3 (25)-0.57

(26)6.42 (27)74 ; (28)12

5-;(29)6-; (30)0 (31)-3 (32)-51

(33)

-45.08 (34)-643

(35)2.6 (36) -7.05; (37) 35

12; (38)3.5 (39)-6.7; (40)0;

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