1.4 有理数的加减 计算专练 2023-2024学年沪科版数学七年级上册

有理数的加减计算专练(50题) 1.-5-4+8+1 2.-2+(-3)-(-10)-(+4) 3.-40-28-(-19)+-24)-(-32) 4.(-17)-46)-+13)+(-16). 5.-到+0-12-12。 6.20-11+(-10)-(-12). 7.(+7)+(-4-(-3-14. 8.13+-7)-5. 9.(-5)+(-4-+6-(-7) 10.(-8+10+(-2)-4) 11.-20)+(+12)-(-5-+7列 2号(号 13.-5)-(+8)-(-12+(-61 14(-061+2+10+}+-25 15.6-(-4)+(-8)-2 16.(-18)+5 17.(-5)-(-3) 18.-5+7-2+136-88 9(引}号-170.3(引-025+(8周 试卷第1页,共3页 2192-14到引4:2-4号*号引-4+到 ǎ号(引 24.31+-28)+28+69: 25.16+(-25)+24+(-35: 266引到引4引 945+-2+5(15】2号 30.8+(-11)-卜5: 12-8 20125+3号g5号-025, 3(52引}-(+引6引 34.25.7+(-7.3+-13.7+7.3: 35-2125++3r5+-32. 36.(-1.25++5.25 试卷第1页,共3页 37.(3+(473-8 38.0.36+-7.4+0.5+0.24+-0.6 393写+(0.5+(←3.21+5 40.(-0.9+1.5 (剖 2+(8周 82引+5到 44.23-17-(-7)+(-16): 5(》1+ 46.(-26.54)+(-6.4)-18.46+6.4: 7()5r-g488+12*(20-2: 49.(-32)-(+53). 50.12+(-8)-(-3)-2 试卷第1页,共3页 参考答案 1.0 【详解】解:-5-4+8+1 =(-5-4)+(8+1 =-9+9 =0. 2.1 【详解】解:-2+(-3)-(-10)-(+4) =-2-3+10-4 =-2-3-4+10 =-9+10 =1; 3.-41 【详解】解:-40-28-(-19)+(-24)-(-32】 =-40-28+19-24+32 =-40-28-24+19+32】 =-92+51 =-41. 4.0 【详解】解:原式=(-17)+46+(-13+(-16) =-17-13+(46-16 =-30+30 =0. 5-1时 【详】解:原式=-8名-12+号 -20+50 67 =-20 1 6.11 【详解】解:20-11+(-10)-(-12) =20-11-10+12 =32-21 =11. 7.-8 【详解】解:(+7+(-4)-(-3-14 =7-4+3-14 =10-18 =-8. 8.1 【详解】(1)解:13+(-7)-5 =13-7-5 =13-12 =1; 试卷第1页,共3页 9.-8 【详解】解:(-5)+(-4-+6)-(-7列 =-5-4-6+7 =(-5-4-6+7 =-15+7 =-8. 10.4 【详解】解:(-8)+10+(-2-(-4 =-8+10-2+4 =4 11.-10 【详解】(1)原式=-20+12+5-7 =-10; 12.6 【详解】原式=对号+2号月 32 号传别 =3+3 =6. 13.-7 【详解】解:(-5)-(+8)-(-12)+(-6) =-5-8+12-6 =-7. 14.8 【详解】解:原式-(06-引2兮25小+10 -(g-引+25-251+10 =-2+0+10 8. 15.0 【详解】解:6-(-4)+(-8)-2 =6+4-8-2 =0 16.-13 【详解】解:(-18)+5=-13; 17.-2 【详解】解:(-5)-(-3)=-5+2=-2: 18.48 【详解】解:-5+7-2+136-88, =136-88, =48: 试卷第1页,共3页 19.1 【详解1解:(号引(-引号-175, =1. 20.5 6 【详】解:展式=时对日 5g8 =3+2+ 6 =5 6 21.0 【详解1解:92(-7+9(-6号引4到+ =-92+7.4+9}62 -6 4+3 55 =-1.8+2.8-1 =0; 2 -16 【解1解-4号+号-写引-14+写 3 =-142+122+12-12-14 3 5 5 =-2-14 =-16; 23 【详解1解:号(兮》(副 2.113 3388 12 1 1 24.100 【详解】解:31+-28)+28+69, =31+[-28+28]+69, =31+0+69, =100: 25.-20 【详解】解:16+(-25)+24+(-35, =16+24+-25)+(-35), =(16+24)+