Which factor of 18 is missing from the table?
6
Which number (other than 1) is a common factor of 14 and 35?
7
Which of the following numbers is a multiple of both 6 and 9?
18
Which number is a prime number?
19
What are the first five square numbers?
1, 4, 9, 16, 25
5 is a factor of both 10 and 15. Which other number is a common factor of 10 and 15?
1
Select the numbers that are prime factors of both 294 and 315
3,7
What is the missing prime factor?
7
Write 26 as a product of it's prime factors
13 x 2
What are the common factors?
5, b, 5b
What is the next number in this sequence?
25
Is this correct? Explain
Yes - Every number can be broken down in to prime factors
Is this always, sometimes, or never a multiple of 4. Why?
Sometimes... when x=2, no as answer = 0
How old is Freddie?
14
What is the missing prime factor
13
Write 42 as a product of its prime factors. Give your answer in the form a × b × . . . and write the factors in ascending order.
2x3x7
