數學題:
Q1: 1 + 2 - 3 * 4 / 5=?
Q2:1 / 2 * 3 - 4 + 5=?
Q3:1 - 2 / 3 + 4 * 5=?
Q4:1 * 2 + 3 / 4 - 5=?
Q5:1 + 2 + 3 + 4 + 5=?
Q6:(Q1) + (Q2) - (Q3) * (Q4) / (Q5)=?
要求1:有小數點取至整數
要求2:列出所有步驟(最少有2個)
-----數學題(very easy!!!)-----
2007-11-26 3:16 am
回答 (8)
2007-11-26 3:26 am
✔ 最佳答案
1)1 + 2 - 3 * 4 / 5=1+2-12/5
=1+2-2
=1
2)1 / 2 * 3 - 4 + 5=?
=3-4+5
=-1+5
=4
Q3:1 - 2 / 3 + 4 * 5=?
=1-1+20
=0+20
=20
Q4:1 * 2 + 3 / 4 - 5=?
=2*2+1-5
=4+1-5
=0
Q5:1 + 2 + 3 + 4 + 5=?
=3+3+4+5
=10+5
=15
Q6:(Q1) + (Q2) - (Q3) * (Q4) / (Q5)=?
=1+4-20*0/15
=1+4-0
=5
參考: 自己
2007-11-26 6:15 am
Q1:1+2-3*4/5
=(1+2)-12/5
=3-12/5
=15/5-12/5
=3/5
=0.6
=1
Q2:1/2*3-4+5
=3/2-4+5
=3/2+(5-4)
=3/2+1
=1+(3/2)
=2 1/2
=5/2
=2.5
=3
Q3:1-2/3+4*5
=1/3+20
=61/3
=20.33333...
=20
Q4:1*2+3/4-5
=2+3/4-5
=11/4-5
=55/20-100/20
=(-45/20)
=(-9/4)
=-2.25
=-2
Q5:1+2+3+4+5
=3+3+4+5
=6+4+5
=10+5
=15
Q6:(Q1) + (Q2) - (Q3) * (Q4) / (Q5)=?
=1+3-20*-2/15
=4-(-40/15)
=4-(-8/3)
=4-(-2.6666666666...)
=4+2.6666666666...
=6.6666666666...
=7
=(1+2)-12/5
=3-12/5
=15/5-12/5
=3/5
=0.6
=1
Q2:1/2*3-4+5
=3/2-4+5
=3/2+(5-4)
=3/2+1
=1+(3/2)
=2 1/2
=5/2
=2.5
=3
Q3:1-2/3+4*5
=1/3+20
=61/3
=20.33333...
=20
Q4:1*2+3/4-5
=2+3/4-5
=11/4-5
=55/20-100/20
=(-45/20)
=(-9/4)
=-2.25
=-2
Q5:1+2+3+4+5
=3+3+4+5
=6+4+5
=10+5
=15
Q6:(Q1) + (Q2) - (Q3) * (Q4) / (Q5)=?
=1+3-20*-2/15
=4-(-40/15)
=4-(-8/3)
=4-(-2.6666666666...)
=4+2.6666666666...
=6.6666666666...
=7
參考: me
2007-11-26 4:23 am
1) 1
2)3
3)20
4)-2
5)15
6)12
2)3
3)20
4)-2
5)15
6)12
2007-11-26 4:01 am
Q1: 1 + 2 - 3 * 4 / 5
=1+2-12/5
=1+2-2.4
=3-2.4
=0.6
=1
Q2:1 / 2 * 3 - 4 + 5
=0.5*3-4+5
=1.5-4+5
=-3.5+5
=2.5
=3
Q3:1 - 2 / 3 + 4 * 5
=1-2/3+20
=1/3+20
=20&1/3
=20
Q4:1 * 2 + 3 / 4 - 5
=2+0.75-5
=-2.25
=-2
Q5:1 + 2 + 3 + 4 + 5
=3+3+4+5
=6+4+5
=10+5
=15
Q6:(Q1) + (Q2) - (Q3) * (Q4) / (Q5)
=1+3-20*-2/15
=1+3--40/5
=1+3+40/5
=1+3+8
=4+8
=12
=1+2-12/5
=1+2-2.4
=3-2.4
=0.6
=1
Q2:1 / 2 * 3 - 4 + 5
=0.5*3-4+5
=1.5-4+5
=-3.5+5
=2.5
=3
Q3:1 - 2 / 3 + 4 * 5
=1-2/3+20
=1/3+20
=20&1/3
=20
Q4:1 * 2 + 3 / 4 - 5
=2+0.75-5
=-2.25
=-2
Q5:1 + 2 + 3 + 4 + 5
=3+3+4+5
=6+4+5
=10+5
=15
Q6:(Q1) + (Q2) - (Q3) * (Q4) / (Q5)
=1+3-20*-2/15
=1+3--40/5
=1+3+40/5
=1+3+8
=4+8
=12
參考: me
2007-11-26 3:33 am
Q1: 3 - 12/5 = 1
Q2: 0.5*3 -4 + 5 = 1.5-4+5 = 2.5
Q3: 1- 2/3 + 4*5 = 1- 2/3 + 20 = 19
Q4: 2 + 3/4 - 5 = -2
Q5: (1+5) * 5/2 = 15
Q6: 1 + 2.5 - 19*-2/15 = 6
all the answers correct to integer.
Q2: 0.5*3 -4 + 5 = 1.5-4+5 = 2.5
Q3: 1- 2/3 + 4*5 = 1- 2/3 + 20 = 19
Q4: 2 + 3/4 - 5 = -2
Q5: (1+5) * 5/2 = 15
Q6: 1 + 2.5 - 19*-2/15 = 6
all the answers correct to integer.
2007-11-26 3:32 am
Q1:1+2-3*4/5 Q2:1/2*3-4+5 Q3:1-2/3+4*5 Q4:1*2+3/4-5 Q5:1+2+3+4+5
=1+2-3*0.8 =0.5*3-4+5 =1-0.666+20 =2+0.75-5 =10+5
=1+2-2.4 =1.5+5-4 =0.3333+20 =-2.25 =15
=0.6 =2.5 =3 =20 =-2
Q6:0.6+3-20*(-2)/15
=3.6+2.67
=6.27
=6
=1+2-3*0.8 =0.5*3-4+5 =1-0.666+20 =2+0.75-5 =10+5
=1+2-2.4 =1.5+5-4 =0.3333+20 =-2.25 =15
=0.6 =2.5 =3 =20 =-2
Q6:0.6+3-20*(-2)/15
=3.6+2.67
=6.27
=6
2007-11-26 3:31 am
1)1 + 2 - 3 x4 / 5
=1+2-12/5
=1+2-2
=1
2)1 / 2x 3 - 4 + 5=?
=3-4+5
=-1+5
=4
Q3:1 - 2 / 3 + 4x 5=?
=1-1+20
=0+20
=20
Q4:1x2 + 3 / 4 - 5=?
=2x2+1-5
=4+1-5
=0
Q5:1 + 2 + 3 + 4 + 5=?
=3+3+4+5
=10+5
=15
Q6:(Q1) x (Q2) - (Q3) x(Q4) / (Q5)=?
=1+4-20x0/15
=1+4-0
=5
=1+2-12/5
=1+2-2
=1
2)1 / 2x 3 - 4 + 5=?
=3-4+5
=-1+5
=4
Q3:1 - 2 / 3 + 4x 5=?
=1-1+20
=0+20
=20
Q4:1x2 + 3 / 4 - 5=?
=2x2+1-5
=4+1-5
=0
Q5:1 + 2 + 3 + 4 + 5=?
=3+3+4+5
=10+5
=15
Q6:(Q1) x (Q2) - (Q3) x(Q4) / (Q5)=?
=1+4-20x0/15
=1+4-0
=5
參考: me
2007-11-26 3:23 am
* 呢個係咩
收錄日期: 2021-04-13 14:34:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071125000051KK04146