有理数的加减法——计算题练习
1、加法计算(直接写出得数,每小题1分): (1) (-6)+(-8)= (4) (-7)+(+4)= (7) -3+2= (10) (-4)+6=
(2) (-4)+2.5= (5) (+2.5)+(-1.5)= (8) (+3)+(+2)=
(3) (-7)+(+7)= (6) 0+(-2)= (9) -7-4=
(11) ??3??1= (12) a???a?=
2、减法计算(直接写出得数,每小题1分): (1) (-3)-(-4)= (4) 1.3-(-2.7)= (7) 13-(-17)= (10) 0-6=
(2) (-5)-10=
(3) 9-(-21)= (5) 6.38-(-2.62)= (6) -2.5-4.5= (8) (-13)-(-17)= (9) (-13)-17= (11) 0-(-3)= (12) -4-2=
1??1??1?(13) (-1.8)-(+4.5)= (14) ????????= (15) (?6.25)???34?=
???4??3?3、加减混合计算题(每小题3分):
(1) 4+5-11; (2) 24-(-16)+(-25)-15 (3) -7.2+3.9-8.4+12
(4) -3-5+7 (5) -26+43-34+17-48 (6) 91.26-293+8.74+191
(7) 12-(-18)+(-7)-15 (8) (?83)?(?26)?(?41)?(?15)
(9) (?1.8)?(?0.7)?(?0.9)?1.3?(?0.2) (10) (-40)-(+28)-(-19)+(-24)-(32)
(11) (+4.7)-(-8.9)-(+7.5)+(-6) (12) -6-8-2+3.54-4.72+16.46-5.28
第1页
4、加减混合计算题:
?1?5??3??1??4??1?(1)15?? (2) (-1.5)++(+3.75)+?3?5??3??2??6????4? ?????????4??2??6??7??6??7?
22??2??3?2??1??1???1?(3)???5????????????5????1? (4) 4?8???3????1????2?
3??4??3?13??4??13??5??5?
?7??1??1??1?2??3??2?(5) ???3????2????1??(?1.75) (6) ??4????5????4????3?
3??4??3??8??2??4??8??
1??5??1??1??1??3??1?(7) ???1????1????2????3????1? (8) ??1.2?2????5???3.4?(?1.2)
6??6?2??4??4???2??4?? (9)
11??1?22?3?1111 (10) ???8?99?101?33?5?11 ?97?9999?101 第2页
有理数运算练习(一) 【加减混合运算】
一、有理数加法.
1、【基础题】计算: (1) 2+(-3); (2)(-5)+(-8); (3)6+(-4); (4)5+(-5); (5)0+(-2); (6)(-10)+(-1); (7)180+(-10); (8)(-23)+9; (9)(-25)+(-7); (10)(-13)+5; (11)(-23)+0; (12)45+(-45). 2、【基础题】计算: (1)(-8)+(-9); (2)(-17)+21; (3)(-12)+25; (4)45+(-23); (5)(-45)+23; (6)(-29)+(-31); (7)(-39)+(-45); (8)(-28)+37. 3、【基础题】计算,能简便的要用简便算法: (1)(-25)+34+156+(-65); (2)(-64)+17+(-23)+68; (3)(-42)+57+(-84)+(-23); (4)63+72+(-96)+(-37); (5)(-301)+125+301+(-75); (6)(-52)+24+(-74)+12; (7)41+(-23)+(-31)+0; (8)(-26)+52+16+(-72). 4、【综合Ⅰ】计算: (1)
1313?1??1??1??(?); (2)???????; (3)??1.2????1?; (4)(?3)?(?2); 3444?2??3??5?27572111)+0.8; (7)(—5)+0; (8)4+(—5).
63615(5)(3)?(?2); (6)(—
5、【综合Ⅰ】计算:
101157919(?0.5)?()?(?)?9.75()?(?)?()?(?)224612; (2)(1)3;
12318394377(?)?(?)?(?)?()?()(?3.5)?(?)?(?)?(?)?0.75?(?)5255; (4)3423(3)2来源学科网
第3页
二、有理数减法.
6、【基础题】计算: (1)9-(-5); (2)(-3)-1; (3)0-8; (4)(-5)-0; (5)3-5; (6)3-(-5); (7)(-3)-5 (8)(-3)-(-5); (9)(-6)-(-6); (10)(-6)-6. 6.1、【综合Ⅰ】计算:
232212)-(-); (2)(-1)-1; (3)(-)-; (4)1-(-2.7); 55352541112(5)0-(-); (6)(-)-(-); (7)3-5 ; (8)-64-丨-64丨
72245(1)(-
7、【基础题】填空: (1)(-7)+( )=21; (2)31+( )=-85;
(3)( )-(-21)=37; (4)( )-56=-40 8、【基础题】计算: (1)(-72)-(-37)-(-22)-17; (2)(-16)-(-12)-24-(-18); (3)23-(-76)-36-(-105); (4)(-32)-(-27)-(-72)-87. (5)(-
三、有理数加减混合运算
9、【综合Ⅰ】计算
215111)--(-)-(-); (6)(-12)-[ -6.5-(-6.3)-6 ] . 326352314)+-; 5551715121521(4)(-5)-(-)+7-; (5)+(-)-(-)-; (6)-++-;
2336234632(1)-7+13-6+20; (2)-4.2+5.7-8.4+10; (3)(-
10、【综合Ⅰ】计算,能简便的要用简便算法:
1111+(-); (3)-(-0.25)-; 25261221167(4)(-)-15+(-); (5)+(-)-1+; (6)(-12)-(-)+(-8)-
33353510(1)4.7-3.4+(-8.3); (2)(-2.5)-
第4页
11、【综合Ⅰ】计算:
(1)33.1-(-22.9)+(-10.5); (2)(-8)-(-15)+(-9)-(-12);
112111)-(-2.75)+; (4)(-)+(-)-(-)-; 4236421241101157(5)+(-)-(-)+(-); (6)+(-)-(-)+(-)
235234612(3)0.5+(-
12、【综合Ⅰ】计算:
25); (3)31+(-)+0.25; 54136(4)7-(-)+1.5; (5)49-(-20.6)-; (6)(-)-7-(-3.2)+(-1);
255886315(7)12+丨-11丨-(-)+丨2丨; (8)(- 9.9)+ 10 + 9.9 +(- 10)
11521199
(1)7+(-2)-3.4; (2)(-21.6)+3-7.4+(- 13、【综合Ⅰ】计算:
(1)??1????2??3?4???5????6??7?8; (2)-0.5+1.75+3.25+(-7.5) (3)???????? (5)-0.5-(-3
?1??3??1??2?3?2?1?1?3?5?????; (4)5???6??2???14?;
4?6?4?6?4?3?742511)+2.75-(+7); (6)3?12?9?7
451352642 第5页
相关推荐: