初中数学试卷
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、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= (5) 6.38-(-2.62)= (8) (-13)-(-17)= (11) 0-(-3)=
(3) 9-(-21)= (6) -2.5-4.5= (9) (-13)-17= (12) -4-2=
(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?=
1??1? (15) ?1? (13) (-1.8)-(+4.5)= (14) ?(?6.25)????=??3?=?????4??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
金戈铁制卷
(4) -3-5+7 (5) -26+43-34+17-48 (6) 91.26-293+8.74+191
(7) 12-(-18)+(-7)-15
(9) (?1.8)?(?0.7)?(?0.9)?1.3?(?0.2)
(11) (+4.7)-(-8.9)-(+7.5)+(-6)
4、加减混合计算题:
(1)15???5??3??1??4???56??????37??????26??????67?? 金戈铁制卷
(8) (?83)?(?26)?(?41)?(?15) (10) (-40)-(+28)-(-19)+(-24)-(32) (12) -6-8-2+3.54-4.72+16.46-5.28 (2) (-1.5)+??1??1???34??+(+3.75)+???42??
22??2??3?2??1??1???1?(3)???5????????????5????1? (4) 4?8???3????1????2?
?3??4??3??4?
(5) ????32?3?????3??2???24??????13???(?1.75)
(7) ????11?2???????11?4???????21?2?????3??1???34??????14??
金戈铁制卷
13?13??5??5? (6)
????47?8???????51?2???????41?4???????31?8?? (8) ????1.2?21??5?6??????56????3.4?(?1.2)