PRIME AND COMPOSITE

Front

Is 21 prime or composite?

Back

Composite, because it has 4 factors.

Front

Is 36 prime or composite?

Back

Composite, because it has 9 factors.

Front

Which list has ONLY prime numbers? Options: 1, 2, 3, 2, 3, 5, 2, 3, 4, 2, 4, 6

Back

2, 3, 5

Front

What are all prime numbers divisible by?

Back

1 and itself

Front

List all the factors of 24.

Back

1, 2, 3, 4, 6, 8, 12, 24

Front

Which number is composite? Options: 11, 13, 21, 23

Back

21

Front

Which number listed below is a prime number? Options: 1, 37, 63, 33

Back

37

Front

Which of the following is a factor of 54? Options: 4, 7, 5, 9

Back

9

Front

Who made an error and included a composite number? Eric: 5, 7, 17, 23; Maya: 3, 5, 13, 17; Bella: 2, 3, 17, 19; Joan: 7, 11, 13, 21

Back

Joan

Front

Which group contains all prime numbers? Options: 9, 17, 31, 37, 2, 6, 27, 47, 2, 23, 43, 47, 5, 21, 41, 47

Back

2, 23, 43, 47