WorksheetsPrime, Composite and factors
Total questions: 9
Worksheet time: 5mins
Four students each wrote down a number between 30 and 40. The list shows the numbers they wrote.
Elly—35
Ulysses—39
Maggie—37
Palmer—33
Which student wrote down a prime number?
Elly
Ulysses
Maggie
Palmer
Brenda said that the number 2 is prime because it has only two factors. Carla said that the number 2 is composite because it is even, and all even numbers are composite. Who is correct?
Brenda is correct.
Carla is correct.
Both of them are correct.
Neither of them is correct.
Seth’s homework assignment is to write factor pairs that contain only composite numbers. Seth wrote four factor pairs for the number 132, as shown below. 6 × 22 11 × 12 3 × 44 2 × 66 Which of Seth’s factor pairs contains only composite numbers?
6 × 22
11 × 12
3 × 44
2 × 66
3. How many of the numbers listed below are prime numbers?
1, 2, 8, 14, 19
one
two
three
four
The number 1 is...
A Prime number
A Composite number
Neither, it is an exception
Both, it is an exception
6. How many of the numbers listed below are composite numbers?
1, 8, 12, 20, 23, 25
one
two
three
four
Check all the factors of 15
1
5
3
10
15
Which of the following numbers is a composite factor of 96?
2
3
23
32
7. Which of the following numbers is a prime factor of 24
1
3
6
15
