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0102 第三章複習

Authored by 許菡容 許菡容

Mathematics

7th Grade

Used 1+ times

0102 第三章複習
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13 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

-3x 可以用下列哪一個式子表示?

-3+x

x-3

(-x)+(-x)+(-x)

(-x)+x+x

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

老師有明信片若干張,分給 x 個學生,若每人分 3 張,還剩下 2 張,請問共有多少張明信片?

3x+2

3×(x+2)

2×(x+3)

5x

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

關於式子的化簡,下列何者正確?

-8+x=-8x

3+x=3x

x÷2=2x

5×x=5x

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

已知苡瑄今年 13 歲,爸爸 35 歲,則再經過多少年之後,爸爸的年歲恰好是苡瑄的兩倍?

7

9

11

13

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

若 A=2x+3,B=3x-2,則 2A+B=?

5x+1

7x+4

8x-1

x-5

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

x=-2 是下列哪一個一元一次方程式的解?

3x+1=2

-2x+4=1

5x+8=1

7x+13=-1

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

雞有 x 隻,兔有 4 隻,則牠們共有多少隻腳?

x+4

4x

4x+8

2x+16

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