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18 questions
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- 1. Multiple Choice
Which are factors of 20?
2,10,5,4,1,20
3,5,7,9
40,80,100
15,25,35
- 2. Multiple Choice
Which number is prime?
15
21
5
12
- 3. Multiple Choice
Which is a factor pair of 24?
2,12
3,5
7,6
8,5
- 4. Multiple Choice
Which number is the only even prime number?
2
4
6
12
- 5. Multiple Choice
what are factors of 42?
1,42,2,21,7,6
2,24
48,2
3,4,7,8
- 6. Multiple Choice
Which numbers are prime?
3,5,7,15
3,5,2,1,7,13
2,4,6,8,10
3,5,7,9,11,13,15,21
- 7. Multiple Choice
List the factors of 30
1,30,2,15,3,10,5,6
2,4,6,8,10,12
3,10,5,7
8,7,5,8,6
- 8. Multiple Choice
Which number is prime?
13
8
21
35
- 9. Multiple Choice
Which are factor pairs of 45?
1,45,5,9
1,3,7,9
5,7,8,9
7,9,5,2
- 10. Multiple Choice
Which number is Composite?
3
5
11
12
- 11. Multiple Choice
15
Prime
Composite
- 12. Multiple Choice
2
Prime
Composite
- 13. Multiple Choice
12
Prime
Composite
- 14. Multiple Choice
Which is a multiple of 3
15
4
1
5
- 15. Multiple Choice
Multiples of 4
4,8,12,16,20
2,4,6,8
1,2
3,6,9
- 16. Multiple Choice
Which number is Composite?
5
3
2
24
- 17. Multiple Choice
Which number is Prime?
12
15
4
3
- 18. Multiple Choice
Only has 1 Factor Pair and can only be divided by 1 and itself
Composite Number
Prime Number
Factor
Multiple
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