有理数加减法计算题(含答案)

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1 【

2 】.盘算:

(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)31-32+1;(14)-41+65+32-21

;

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

(17)-432+11211-1741-21817

;(18)2.25+343-12125-883;

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

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

;

(23)-43173

1+; (24)521-10.8; (25)0.12-0.54-203; (26)-4.72+16.42-5.28(27))(7527

23-+; (28))(4331-+; (29)

)432()413(-+-; (30))511(2.1++-)((31)23-17-(-7)+(-16) (32)32+(-51)-1+31

(33)(-26.54)+(-6.4)-18.54+6.4

(34)(-487)-(-521)+(-441)-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)43

(15)-191(16)-92.8(17)-221817

(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)125-

;

(29)6-; (30)0(31)-3 (32)-51 (33)-45.08 (34)-643

(35)2.6

(36) -7.05; (37)3512

; (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)-221817

(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)125-

;

(29)6-; (30)0 (31)-3 (32)-51 (33)-45.08 (34)-643

(35)2.6

(36) -7.05; (37)3512

; (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)-221817

(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)125-

;

(29)6-; (30)0 (31)-3 (32)-51 (33)-45.08 (34)-643

(35)2.6

(36) -7.05; (37)3512

; (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) 3

2(14) 43(15)-191(16)-92.8(17)-221817

(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)125-

;(29)6-; (30)0 (31)-3

(32)-51 (33)-45.08 (34)-643

(35)2.6 (36) -7.05; (37)3512; (38)3.5 (39)-6.7; (40)0;

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