1)2(-5)+3x6-2(7)
=
=
=
2)1+2-3x(-4)-5x6
=
=
=
3)1-2(-3)-4x5+6
=
=
=
4)1-2x3-4(-5)-6
=
=
=
5)-1x(-2)+3-4x5-6
=
=
=
6)-1x2-3(-4)+5(-6)
=
=
=
7)(-1)x2-3x4-5x(-6)
=
=
=
8)2-5x2x(-3)+4(-7)
=
=
=
9)-2(-5)(-3)+6+4x(-7)
=
=
=
負數與正數(加、減、乘、除)
2008-09-24 4:51 am
回答 (7)
2008-09-24 5:00 am
✔ 最佳答案
1)2(-5)+3x6-2(7)=-10+18-14
=-6
2)1+2-3x(-4)-5x6
=1+2+12-30
=-15
3)1-2(-3)-4x5+6
=1+6-20+6
=-7
4)1-2x3-4(-5)-6
=1-6+20-6
=9
5)-1x(-2)+3-4x5-6
=2+3-20-6
=-21
6)-1x2-3(-4)+5(-6)
=-2+12-30
=-20
7)(-1)x2-3x4-5x(-6)
=-2-12+30
=16
8)2-5x2x(-3)+4(-7)
=2+30-28
=4
9)-2(-5)(-3)+6+4x(-7)
=-30+6-28
=-52
2008-09-24 6:01 am
1)2(-5)+3x6-2(7)
=-10+18-14
=-6
2)1+2-3x(-4)-5x6
=1+2+12-30
=-15
3)1-2(-3)-4x5+6
=1+6-20+6
=-7
4)1-2x3-4(-5)-6
=1-6+20-6
=9
5)-1x(-2)+3-4x5-6
=2+3-20-6
=-21
6)-1x2-3(-4)+5(-6)
=-2+12-30
=-20
7)(-1)x2-3x4-5x(-6)
=-2-12+30
=16
8)2-5x2x(-3)+4(-7)
=2+30-28
=4
9)-2(-5)(-3)+6+4x(-7)
=-30+6-28
=-52
=-10+18-14
=-6
2)1+2-3x(-4)-5x6
=1+2+12-30
=-15
3)1-2(-3)-4x5+6
=1+6-20+6
=-7
4)1-2x3-4(-5)-6
=1-6+20-6
=9
5)-1x(-2)+3-4x5-6
=2+3-20-6
=-21
6)-1x2-3(-4)+5(-6)
=-2+12-30
=-20
7)(-1)x2-3x4-5x(-6)
=-2-12+30
=16
8)2-5x2x(-3)+4(-7)
=2+30-28
=4
9)-2(-5)(-3)+6+4x(-7)
=-30+6-28
=-52
參考: 書
2008-09-24 5:06 am
1) 2(-5)+3x6-2(7)
=2-5+18-14
=-3+4
=1
2) 1+2-3x(-4)-5x6
=1+2-(-12)-30
=1+2+12-30
=15-30
=-15
3) 1-2(-3)-4x5+6
=1-(-6)-20+6
=7-20+6
=-7
4) 1-2x3-4(-5)-6
=1-6-(-20)-6
=-5+20-6
=20-11
=9
5) -1x(-2)+3-4x5-6
=2+3-20-6
=5-6-20
=-21
6) -1x2-3(-4)+5(-6)
=-2+12-30
=12-32
=-20
7) (-1)x2-3x4-5x(-6)
=-2-12+30
=30-14
=16
8) 2-5x2x(-3)+4(-7)
=2-(-30)+(-28)
=32-28
=4
9) -2(-5)(-3)+6+4x(-7)
=10(-3)+6+(-28)
=-30+6-28
= 2+6
=8
=2-5+18-14
=-3+4
=1
2) 1+2-3x(-4)-5x6
=1+2-(-12)-30
=1+2+12-30
=15-30
=-15
3) 1-2(-3)-4x5+6
=1-(-6)-20+6
=7-20+6
=-7
4) 1-2x3-4(-5)-6
=1-6-(-20)-6
=-5+20-6
=20-11
=9
5) -1x(-2)+3-4x5-6
=2+3-20-6
=5-6-20
=-21
6) -1x2-3(-4)+5(-6)
=-2+12-30
=12-32
=-20
7) (-1)x2-3x4-5x(-6)
=-2-12+30
=30-14
=16
8) 2-5x2x(-3)+4(-7)
=2-(-30)+(-28)
=32-28
=4
9) -2(-5)(-3)+6+4x(-7)
=10(-3)+6+(-28)
=-30+6-28
= 2+6
=8
參考: by myself...
2008-09-24 5:06 am
1)2(-5)+3x6-2(7)
=-10+18-14
=8-14
=-6
2)1+2-3x(-4)-5x6
=1+2+12-30
=3+12-30
=-15
3)1-2(-3)-4x5+6
=1+6-20+6
=7-20+6
=-7
4)1-2x3-4(-5)-6
=1-6+20-6
=-5+20-6
=9
5)-1x(-2)+3-4x5-6
=2+3-20-6
=5-20-6
=-21
6)-1x2-3(-4)+5(-6)
=-2+12-30
=10-30
=-20
7)(-1)x2-3x4-5x(-6)
=-2-12+30
=-14+30
=16
8)2-5x2x(-3)+4(-7)
=2+30-28
=32-28
=4
9)-2(-5)(-3)+6+4x(-7)
=-30+6-28
=-24-28
= -52
=-10+18-14
=8-14
=-6
2)1+2-3x(-4)-5x6
=1+2+12-30
=3+12-30
=-15
3)1-2(-3)-4x5+6
=1+6-20+6
=7-20+6
=-7
4)1-2x3-4(-5)-6
=1-6+20-6
=-5+20-6
=9
5)-1x(-2)+3-4x5-6
=2+3-20-6
=5-20-6
=-21
6)-1x2-3(-4)+5(-6)
=-2+12-30
=10-30
=-20
7)(-1)x2-3x4-5x(-6)
=-2-12+30
=-14+30
=16
8)2-5x2x(-3)+4(-7)
=2+30-28
=32-28
=4
9)-2(-5)(-3)+6+4x(-7)
=-30+6-28
=-24-28
= -52
2008-09-24 5:03 am
1)2(-5)+3x6-2(7)
= -10+18-14
=-6
2)1+2-3x(-4)-5x6
=1+2-(-12)-30
=-15
3)1-2(-3)-4x5+6
=1-(-6)-20+6
=-7
4)1-2x3-4(-5)-6
=1-6-(-20)-6
=9
5)-1x(-2)+3-4x5-6
=2+3-20-6
=-21
6)-1x2-3(-4)+5(-6)
=-2-(-12)-30
=-20
7)(-1)x2-3x4-5x(-6)
=-2-12-(-30)
=16
8)2-5x2x(-3)+4(-7)
=2-(-30)+(-28)
=4
9)-2(-5)(-3)+6+4x(-7)
=-30+6+(-28)
=-52
= -10+18-14
=-6
2)1+2-3x(-4)-5x6
=1+2-(-12)-30
=-15
3)1-2(-3)-4x5+6
=1-(-6)-20+6
=-7
4)1-2x3-4(-5)-6
=1-6-(-20)-6
=9
5)-1x(-2)+3-4x5-6
=2+3-20-6
=-21
6)-1x2-3(-4)+5(-6)
=-2-(-12)-30
=-20
7)(-1)x2-3x4-5x(-6)
=-2-12-(-30)
=16
8)2-5x2x(-3)+4(-7)
=2-(-30)+(-28)
=4
9)-2(-5)(-3)+6+4x(-7)
=-30+6+(-28)
=-52
參考: me
2008-09-24 5:02 am
1)2(-5)+3x6-2(7)
= -10+18-14
= 8-14
=6
2)1+2-3x(-4)-5x6
= 3+12-30
=15-30
= -15
3)1-2(-3)-4x5+6
= 1+6-20+6
= 7-20+6
= -7
4)1-2x3-4(-5)-6
= 1-6+20-6
= 5+20-6
= 19
5)-1x(-2)+3-4x5-6
= 2+3-20-6
= 5-20-6
= -11
6)-1x2-3(-4)+5(-6)
= -2+12-30
= 10-30
= -20
7)(-1)x2-3x4-5x(-6)
= -2-12+30
= -14+30
= 16
8)2-5x2x(-3)+4(-7)
= 2+30-28
= 32-28
= 4
9)-2(-5)(-3)+6+4x(-7)
= -30+6-28
= -24-28
= -52
= -10+18-14
= 8-14
=6
2)1+2-3x(-4)-5x6
= 3+12-30
=15-30
= -15
3)1-2(-3)-4x5+6
= 1+6-20+6
= 7-20+6
= -7
4)1-2x3-4(-5)-6
= 1-6+20-6
= 5+20-6
= 19
5)-1x(-2)+3-4x5-6
= 2+3-20-6
= 5-20-6
= -11
6)-1x2-3(-4)+5(-6)
= -2+12-30
= 10-30
= -20
7)(-1)x2-3x4-5x(-6)
= -2-12+30
= -14+30
= 16
8)2-5x2x(-3)+4(-7)
= 2+30-28
= 32-28
= 4
9)-2(-5)(-3)+6+4x(-7)
= -30+6-28
= -24-28
= -52
2008-09-24 4:59 am
1)2(-5)+3x6-2(7)
=-6
2)1+2-3x(-4)-5x6
=-15
3)1-2(-3)-4x5+6
=-7
4)1-2x3-4(-5)-6
=7
5)-1x(-2)+3-4x5-6
=-21
6)-1x2-3(-4)+5(-6)
=-20
7)(-1)x2-3x4-5x(-6)
=16
8)2-5x2x(-3)+4(-7)
=4
9)-2(-5)(-3)+6+4x(-7)
=-52
=-6
2)1+2-3x(-4)-5x6
=-15
3)1-2(-3)-4x5+6
=-7
4)1-2x3-4(-5)-6
=7
5)-1x(-2)+3-4x5-6
=-21
6)-1x2-3(-4)+5(-6)
=-20
7)(-1)x2-3x4-5x(-6)
=16
8)2-5x2x(-3)+4(-7)
=4
9)-2(-5)(-3)+6+4x(-7)
=-52
收錄日期: 2021-05-01 16:20:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080923000051KK02028