康數601101-102質數合數質因數

康數601101-102質數合數質因數

1st - 5th Grade

31 Qs

quiz-placeholder

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康數601101-102質數合數質因數

康數601101-102質數合數質因數

Assessment

Quiz

Mathematics

1st - 5th Grade

Practice Problem

Hard

Created by

老師 楊

Used 3+ times

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31 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

下面哪一個數是15的質因數?

1
3
10
15

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

下面哪一個是50的質因數分解?

1×50
2×25
2×5×5
5×10

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

下面哪一個數不是合數?

41
40
32
16

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

3、4、5、7、11、12、15、16、17,這些數中共有幾個質數?

4個
5個
6個
7個

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

一個質數是某一個整數的因數時,我們稱這個質數為該整數的什麼數?

質數
因數
質因數
公因數

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

把90做質因數分解,下面哪一個答案是正確的?

90=9×10
90=2×5×9
90=2×3×15
90=2×3×3×5

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

下面哪一個數不是質數?

13
15
17
29

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