Factors, Prime Numbers, Prime Factorisation | 2.6K plays

1.

Multiple Choice

45 sec

1 pt

Prime numbers have:

Exactly 2 factors

2 pairs of factors

More than 2 factors

1 factor

2.

Multiple Choice

45 sec

1 pt

Which number is NOT a factor of 10?

1

2

3

5

3.

Multiple Choice

1 min

1 pt

Which one is a prime number?

15

17

21

39

4.

Multiple Choice

2 mins

1 pt

Which of the following numbers shows all of the factors of 12?

1,2,3,4,6,12

1,2,3,4,6,8,12

1,2,4,6,12

2,4,6,8,10,12

5.

Multiple Choice

45 sec

1 pt

Which list has only prime numbers?

2, 3, 4, 5

1, 5, 7, 9

2, 3, 5, 7

2, 4, 6, 8

6.

Multiple Choice

1 min

1 pt

which number below is NOT prime?

7

9

2

3

7.

Multiple Choice

1 min

1 pt

I am a prime number between 30 and 40. Which number could I be?

31

33

36

39

8.

Multiple Choice

2 mins

1 pt

What are all of the factors of 15?

1,3,5,15

5,15

1,15

1,5

9.

Multiple Choice

1 min

1 pt

What are the factors of 19?

1

19

1,19

0

10.

Multiple Choice

1 min

1 pt

Which is a factor pair of 22?

1 x 11

2 x 11

21 x 1

22 x 3

11.

Multiple Choice

45 sec

1 pt

If 5 a factor of 27?

yes

no

12.

Multiple Choice

2 mins

1 pt

Find all of the factor pairs of 24.

1 x 24 ; 2 x 12

1 x 24 ; 2 x 12 ; 3 x 8

1 x 24 ; 4 x 6

1 x 24 ; 2 x 12 ; 3 x 8 ; 4 x 6

13.

Multiple Choice

30 sec

1 pt

Which factor of 12 is missing in the list of numbers? 1,2,3,4,___,12.

5

6

8

10

14.

Multiple Choice

2 mins

1 pt

What are the factors of 14?

1,14

1, 2, 7, 14

2, 7

1, 14

15.

Multiple Choice

2 mins

1 pt

The factor pairs of 15 are 1 and 15 and _______

2 and 7

3 and 6

3 and 5

3 and 4

16.

Multiple Choice

45 sec

1 pt

What is the only prime number that is even? (even = angka genap)

14

22

17

2

17.

Multiple Choice

2 mins

5 pts

2 x 2 x 2 is the prime factorization of...

6

12

22

8

18.

Multiple Choice

2 mins

1 pt

Find the prime factorization of 12 ?

2 x 6

2 + 2 + 2 + 2 + 2 + 2

2²x 3

1 x 2²x 3

19.

Multiple Choice

2 mins

1 pt

Find the prime factorization of 16 ?

1 x 16

2²x 4

2⁴

2² + 2²

20.

Multiple Choice

30 sec

1 pt

Which of the following shows the prime factorization of 50?

2 x 5 x 5

2 x 2 x 5

2 x 5 x 5 x 5

2 x 2 x 2 x 5

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