Use the factor tree to write 36 as a product of its prime factors. Give your answer in the form a × b × . . . and write the factors in ascending order.
2 × 2 × 3 × 3
Which number is a prime number?
19
If you use the cards shown to write 132 as a product of its prime factors, which three cards will you have left over?
3,5,7
What number is represented by the prime factor tree
27
Is this correct? Explain
Yes - Every number can be broken down in to prime factors
Which factor of 18 is missing from the table?
6
What are the first five square numbers?
1, 4, 9, 16, 25
Select the numbers that are prime factors of both 294 and 315
3,7
Which student is wrong?
Chantelle
How old is Freddie?
14
Which of the following numbers is a multiple of both 6 and 9?
18
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
What is the next number in this sequence?
25
Which number has more than 1 prime factor
12 = 2, 3,
What is the missing prime factor
13
5 is a factor of both 10 and 15. Which other number is a common factor of 10 and 15?
1
What are the common factors?
5, b, 5b
Is this always, sometimes, or never a multiple of 4. Why?
Sometimes... when x=2, no as answer = 0
Write 26 as a product of it's prime factors
13 x 2
What is the missing prime factor?
7
Which number (other than 1) is a common factor of 14 and 35?
7