Lũy thừa

Lũy thừa

1st - 12th Grade

20 Qs

quiz-placeholder

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Lũy thừa

Lũy thừa

Assessment

Quiz

Mathematics

1st - 12th Grade

Hard

Created by

Tuyến Lương

Used 4+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phép tính sau có thể rút gọn lại như thế nào: a.a.a...a.a (tích n thừa số a)

n.a

ana^n

nan^a

ana_n

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 155.154 = ?15^5.15^4\ =\ ?  

15

 15915^9  

 152015^{20}  

225

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 2210: 224=?22^{10}:\ 22^4=?  

 22622^6  

 221422^{14}  

1

22

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Khẳng định nào sau đây là SAI

a1=aa^1=a

a 0= 1a\ ^0=\ 1

am.an = am.na^m.a^n\ =\ a^{m.n}

am:a n= amna^m:a\ ^n=\ a^{m-n}

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Lập phương của số a là 125, số a là?

5

2

15625

125

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ta viết 2019 = 2. 103+ 102 + 1. 10+ 9. 100 là đúng hay sai?

Đúng

Sai

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Viết số 723 dưới dạng tổng các lũy thừa của 10 :

723 = 7.102 + 2. 10 + 3. 100

723 = 7.103 + 2. 102 + 3. 10

723 = 7.100 + 2. 101 + 3. 102

723 = 700 + 20 + 3

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