Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

### Grade 6 - Mathematics1.20 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: Which are the first ten composite numbers?1,3,5,7,9,11,13,15,17,19.None of these4,6,8,9,10,12,14,15,16,18.2,4,6,8,10,12,14,16,18,20. Q 2: Which are the first ten prime numbers?2,4,6,7,9,12,16,19,21,232,3,4,5,6,7,8,26,27,292,3,4,5,6,7,8,9,10,252,3,5,7,11,13,17,19,23,29 Q 3: Two prime numbers whose difference is 2 are called _______.Twin Natural NumbersDouble NumbersTwin PrimesTwin Composites Q 4: 5, 7; 11, 13; and 17, 19 are examples of ___________?Non-primesTwin PrimesCompositeDouble Primes Q 5: The natural numbers which have only one and themselves as factors are called __________.Prime NumbersNone of theseTwin PrimesComposites Q 6: 2, 3, 5, 7, and 11 are examples of _________.None of thesePrime NumbersTwin PrimesComposites Q 7: A prime number has ________ factors.exactly twomanyzeroexactly three Q 8: 9, 10, 12, and 15 are examples of ________.Prime NumbersEven NumbersOdd NumbersComposite Numbers Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!