有理数加减法计算题
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) 121521 -+1;(14)-++-; 33 (15)-216-157+348+512-678; (17)-4 2 3 +1 11 12 -17 117 4 -2 18 ; (19)12-(-18)+(-7)-15; (21)4. .7-(-8. .9)-7. .5+(-6); (23)-4 1 3 7 1 3 ; ;(24)5 1 2 -10. .8; ; 4632 (16)81. .26-293. .8+8. .74+111; (18)2. .25+3 353 4 -12 12 -8 8 ; (20)-40-28-(-19)+(-24)-(-32); (22)- 2 3 +(- 111 6 )-(- 4 )- 2 ; (25)0. .12-0. .54- 3 20 ; ; 2513 (26)-4. .72+16. .42-5. .28 (27)3 ;(28) ; (2 )() 7734 (29)(3 ) (2 );(30)(1.2) (1 ) (31)23-17-(-7)+(-16) 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 2 112 +(-)-1+(33)(-26. .54)+(-6. .4)-18. .54+6. .4 533 1711 )-(-5)+(-4)-3 (35)(+6. .1)-(-4. .3)+(-2. .1)-5. .7 8824 (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 1917 (18)-14(19) 8(20)-41(21)0. .1 2418 145 (22)-1(23)3(24)-5. .3(25)-0. .57(26)6. .42(27);(28); 12712 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 1917 (18)-14(19) 8(20)-41(21)0. .1 2418 145 (22)-1(23)3(24)-5. .3(25)-0. .57(26)6. .42(27);(28); 12712 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 1917 (18)-14(19) 8(20)-41(21)0. .1 2418 145 (22)-1(23)3(24)-5. .3(25)-0. .57(26)6. .42(27);(28); 12712 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 (14)(15)-191(16)-92. .8(17)-22 3418 191 (18)-14(19) 8(20)-41(21)0. .1(22)-1(23)3(24)-5. .3(25)-0. .57 2412 451 (26)6. .42(27); (28); (29)6;(30)0(31)-3(32)-(33) 5712 123 -45. .08(34)-6(35)2. .6(36) -7. .05;(37); (38)3. .5(39)-6. .7; (40)0; 435 (11) 3. .1(12)-0. .7(13)