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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 6 - Mathematics
1.20 Prime Numbers, Twin Primes and Composite Numbers

Prime Numbers: A natural number that has only 1 and itself as factors is called a 'prime number'.
Examples: 2, 3, 5, and 7

Twin Primes: Two prime numbers whose difference is 2 are called 'twin primes'.
Examples: 3, 5 ; 5, 7 ; and 11, 13

Composite Numbers: A natural number that has factors other than 1 and itself is called a 'composite number'.
Examples: 9, 10, 12, and 15


Directions: Answer the following questions. Also write at least 10 examples of your own for each Prime Numbers, Twin Primes and Composite Numbers.
Q 1: ________ is an even prime number.
1
2
0
4

Q 2: 9, 10, 12, and 15 are examples of ________.
Prime Numbers
Even Numbers
Odd Numbers
Composite Numbers

Q 3: Two prime numbers whose difference is 2 are called _______.
Double Numbers
Twin Primes
Twin Composites
Twin Natural Numbers

Q 4: A prime number has ________ factors.
zero
many
exactly two
exactly three

Q 5: _______ is neither prime nor composite?
1
None of these
0
2

Q 6: Which are the first ten prime numbers?
2,3,4,5,6,7,8,9,10,25
2,3,5,7,11,13,17,19,23,29
2,3,4,5,6,7,8,26,27,29
2,4,6,7,9,12,16,19,21,23

Q 7: Which are the first ten composite numbers?
4,6,8,9,10,12,14,15,16,18.
None of these
2,4,6,8,10,12,14,16,18,20.
1,3,5,7,9,11,13,15,17,19.

Q 8: 2, 3, 5, 7, and 11 are examples of _________.
Composites
None of these
Prime Numbers
Twin Primes

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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