Factor Trees

Factor Trees - Finding Prime factors of a number.

Multiple Choice

 

Is 1,284,604 divisible by 2?

• Yes, because the sum of the digits is 20, which is an even number

• No, because 4 is an odd number

• Yes, because 4 is an even number

• No, because the it is not divisible by 3

Multiple Choice

Is 816 divisible by 3?

• Yes

• No

Multiple Choice

 

Is 555,509 divisible by 3?

• Yes

• No

Multiple Choice

 

2520 is divisible by 6 because:

• It is divisible by 2 (even) and 5 (ends in a 0 or 5)

• The sum of the digits is 12, a multiple of 6

• It's divisible by 2 (even) and 3 (sum of digits is a multiple of 3)

• The sum of the digits is even

​We use a FACTOR TREE like this to find what prime numbers were multiplied together to make the product.

Complete a FACTOR TREE for the number.

20

Complete a FACTOR TREE for the number.

99

Complete a FACTOR TREE for the number.

40

Complete a FACTOR TREE for the number.

79

Complete a FACTOR TREE for the number.

52