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比例 (一)

Authored by 鄭裕仁 新竹康橋

Mathematics

9th Grade

10 Questions

CCSS covered

Used 2+ times

比例 (一)
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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x2=y3=z0.5\frac{x}{2}=\frac{y}{3}=\frac{z}{0.5}  則 x+3yz2xy+z=?\frac{x+3y-z}{2x-y+z}=?  

 17\frac{1}{7}  

7

1

 13\frac{1}{3}  

Tags

CCSS.7.RP.A.3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

如果 ba=2 , cb=3\frac{b}{a}=2\ ,\ \frac{c}{b}=3 ,則  a+bb+c=?\frac{a+b}{b+c}=?  


 13\frac{1}{3}  

 38\frac{3}{8}  

 35\frac{3}{5}  

 23\frac{2}{3}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

三數之和為98,第一數對第二數之比值為 23\frac{2}{3} 

,第二數對第三數之比值為 58\frac{5}{8}  ,則第二數為何?

15

20

30

32

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

如果 x=ab, ab , b0x=\frac{a}{b},\ a\ne b\ ,\ b\ne0  則 a+bab=?\frac{a+b}{a-b}=?  


 xx+1\frac{x}{x+1}  

 x+1x1\frac{x+1}{x-1}  

 x1xx-\frac{1}{x}  

 x+1xx+\frac{1}{x}  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 if xx1=y2+2y1y2+2y2 , x=?if\ \frac{x}{x-1}=\frac{y^2+2y-1}{y^2+2y-2}\ ,\ x=?  

 y2+2y1y^2+2y-1  

 y2+2y2y^2+2y-2  

 y2+2y+2y^2+2y+2  

 y2+2y+1y^2+2y+1  

Tags

CCSS.HSA.CED.A.4

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

設 x, y , z 為三個互不相同的正數,若 yxz=x+yz=xy , xy=?\frac{y}{x-z}=\frac{x+y}{z}=\frac{x}{y}\ ,\ \frac{x}{y}=?  


 12\frac{1}{2}  

 35\frac{3}{5}  

 53\frac{5}{3}  

2

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

已知某一矩形寬與長之比為11:13,現在將此矩形的寬與長同時加上同一長度後,則其寬與長之比值可為下列何者?

34\frac{3}{4}

45\frac{4}{5}

67\frac{6}{7}

58\frac{5}{8}

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