1) (+4)-(-4)-(+4)=4__4__4
=______________________
=_______
2)(-8)+(-3)+(-5)=______
3)(+7)-(-2)-(+5)=______
4)(-4.5)-(+3)=______
正數和負數的加減法
2008-09-13 5:27 am
回答 (4)
2008-09-13 10:47 pm
1) (+4)(-4)-(+4)
=4+4-4
=8-4
=4
2) (-8)+(-3)+(-5)
=(-8)-3-5
=(-11)-5
=-16
3) (+7)-(-2)-(+5)
=7+2-5
=9-5
=4
4) (-4.5)-(+3)
=(-4.5)-3
=-7.5
=4+4-4
=8-4
=4
2) (-8)+(-3)+(-5)
=(-8)-3-5
=(-11)-5
=-16
3) (+7)-(-2)-(+5)
=7+2-5
=9-5
=4
4) (-4.5)-(+3)
=(-4.5)-3
=-7.5
2008-09-13 7:10 am
1) (+4)-(-4)-(+4)
=8-4
=4+4-4
=4
2) (-8)+(-3)+(-5)
=-8-3-5
=-11-5
=-16
3) (+7)-(-2)-(+5)
=7+2-5
=9-5
=4
4) (-4.5)-(+3)
=-4.5-3
=-7.5
=8-4
=4+4-4
=4
2) (-8)+(-3)+(-5)
=-8-3-5
=-11-5
=-16
3) (+7)-(-2)-(+5)
=7+2-5
=9-5
=4
4) (-4.5)-(+3)
=-4.5-3
=-7.5
參考: me
2008-09-13 5:33 am
１， ＝ ４－４＋４
２，＝ －８－３－５＝ －１６
３，＝ ７＋２－５ ＝ ４
４．＝ －４．５－３＝ －７．５
2008-09-12 21:35:22 補充：
第２題點會＝６ ．．．．
－８－３－５＝－１６
２，＝ －８－３－５＝ －１６
３，＝ ７＋２－５ ＝ ４
４．＝ －４．５－３＝ －７．５
2008-09-12 21:35:22 補充：
第２題點會＝６ ．．．．
－８－３－５＝－１６
參考: 自己
2008-09-13 5:33 am
1.(+4)-(-4)-(+4)=4+4-4=4
2.(-8)+(-3)+(-5)=-8-3+5=-6
3.(+7)-(-2)-(+5)=7+2-5=4
4.(-4.5)-(+3)=-4.5-3=-7.5
2.(-8)+(-3)+(-5)=-8-3+5=-6
3.(+7)-(-2)-(+5)=7+2-5=4
4.(-4.5)-(+3)=-4.5-3=-7.5
參考: ME
收錄日期: 2021-04-13 16:04:16
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080912000051KK01909