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