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15 Qs

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平方根

平方根

Assessment

Quiz

Mathematics

10th Grade

Medium

Created by

Karen Huang

Used 6+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列敘述何者正確?

213=1232^{\frac{1}{3}}=\frac{1}{2^3}

523=13255^{-\frac{2}{3}}=\frac{1}{3\sqrt{25}}

25=(2)5\sqrt{2^5}=\left(\sqrt{2}\right)^5

以上皆非

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

已知 4^a=5  ,求 8a2a+28^a-2^{a+2}  的值。

 5\sqrt{5}  

 44  

 55  

 3\sqrt{3}  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (52)3(5+2)3=\left(\sqrt{5}-\sqrt{2}\right)^{-3}\left(\sqrt{5}+\sqrt{2}\right)^{-3}=  

 333^{-3}  

 333^3  

 535^{-3}  

 232^3  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (6)3÷33×52÷(2)6=\left(-6\right)^3\div3^3\times5^2\div\left(-2\right)^6=  

 825-\frac{8}{25}  

 825\frac{8}{25}  

 258\frac{25}{8}  

 258-\frac{25}{8}  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (2)5(2)3=\left(-2\right)^5\left(-2\right)^3=  

 28-2^8  

 282^8  

 (2)15\left(-2\right)^{15}  

 215-2^{15}  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

請問 6.57×10206.57\times10^{-20}  小數點後第幾位始不為0?

19

20

21

10

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

請問 6.57×10206.57\times10^{20}  為幾位數?

19

20

21

10

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