有理数加减法计算题(含答案).
动物是人类的好朋友-一只八宝袋
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;
(1
7)-4
2
3
+1
11
12
-17
117
4
-2
18
;
(19)12-(-18)+(-7)-15;
(21)4.7-(-8.9)-7.5+(-6);
(13)
1
3
-
2
3
+1;
(14)-
1521
4
+
6
+<
br>3
-
2
;
(16)81.26-293.8+8.74+111;
(18)2.25+3
3
4
-12
53
12
-8
8
;
(20)-40-28-(-19)+(-24)-(-32);
(22)-
2
3
+(-
111
6
)-(-
4
)-
2<
br>;
1
113
(23)-4
7
;
(24)5-10.8; (25)0.12-0.54-;
3320
2
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)
1
4
3
4
1
5
(32)
(34)(-4
123
1
1
(36)
-3.4+4.7-8.35;
(37)
(38)
0.5
2.75
755
4
<
br>2
211
+(-)-1+
(33)(-26.54)+(-6.4)-18.54+6.4
353
7111
)-(-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)
34
1719
(18)-14 (19) 8
(20)-41 (21)0.1
24
18
145
(22)-1
(23)3 (24)-5.3 (25)-0.57 (26)6.42
(27) ; (28)
;
127
12
13
(29)
6
; (30)0
(31)-3 (32)- (33)-45.08 (34)-6
(35)2.6
54
12
(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)
34
1719
(18)-14 (19) 8 (20)-41
(21)0.1
24
18
145
(22)-1 (23)3
(24)-5.3 (25)-0.57 (26)6.42 (27) ;
(28)
;
127
12
13
(29)
6
; (30)0
(31)-3 (32)- (33)-45.08 (34)-6
(35)2.6
54
12
(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)
34
1719
(18)-14 (19) 8 (20)-41
(21)0.1
24
18
145
(22)-1 (23)3
(24)-5.3 (25)-0.57 (26)6.42 (27) ;
(28)
;
127
12
13
(29)
6
; (30)0
(31)-3 (32)- (33)-45.08 (34)-6
(35)2.6
54
12
(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
34
18
191
(18)-14 (19) 8
(20)-41 (21)0.1 (22)-1 (23)3 (24)-5.3
(25)-0.57
2412
45
1
(26)6.42
(27) ; (28)
;(29)
6
; (30)0
(31)-3 (32)-
(33)
5
7
12
12
3
-45.08 (34)-6
(35)2.6 (36) -7.05; (37) ; (38)3.5 (39)-6.7;
(40)0;
4
35