Divisibility Rules!

Divisibility is when a nnumber can be divided by another with no remainder or decimal.

2-
All even numbers, numbers that end in 0,2,4,6,8.

5-
All numbers that end in 0 or 5.

10
All numbers that end in 0.

Quotient - The answer to a divisibility question.
e.g. 12 divided by 2 is 6
6 is the quatient.

3-
The sum of all the digits must equal a multiple of 3.
e.g. 98 123 187
9 + 3 = 12 1 + 2 + 3 = 6 4 + 8 + 7 = 19
1 + 2 = 3 1 + 9 = 10
1 + 0 = 1

1378
1 + 3 + 6 + 8 = 19
1 + 9 = 10
1 + 0 = 1

45728163
4 + 5 + 7 + 2 + 8 + 1 + 6 + 3 = 36
3 + 6 = 9

6-
Any number that is divisible by 2 and 3.

9-
The sum of all the digits must equal 9.
e.g. 18 225 623781
1 + 8 = 9 2 + 2 + 5 = 9 6 + 2 + 3 + 7 + 8 + 1 = 27
2 + 7 = 9

Watch the video!


Sorry it's very late. :(

Divisiblility Rules

Today in class we talked about different kinds of diagram.

Carroll Diagram- is a table used to show how numbers are the same and different

Example



Use Carroll Diagram to sort 30, 79, 162, 3996, 23517, 31974



A Venn Diagram shows relationships between groups of numbers

Example


Use Venn Diagram to sort 93, 540, 955, 8060, 67982, 84430


Common Factor

A number that two or more numbers are divisible by


Example: 4 is a common factor of 8 and 12


Find the factor of 24


Find the factor of 32


Find the common factor of 24 and 32


Find the greatest common factor

The common factors are 1, 2, 4, and 8.


The greatest common factor is 8.


Homework:


Find the factors of 18


Find the factors of 30


Find the common factors of 18 and 30


Find the greatest common factor of 18 and 30


Here is a link about Venn Diagrams.


This is a video about finding the greatest common factor between two numbers.



Remember to study for the quiz tomorrow!

Divisibility

Divisibility

Divisibility is when a number can be divided by another number with no remainder or decimal.

Divisibility rules

 

Quotient- The answer to a division question

 

 Homework for today

 LINK: CLICK HERE!