Transcript StAIR - Division

StAIR - Division
By,
Kimberly Anglin
Division…What is it?
Division is the action of separating
something into equal parts
Why do I need to learn about
division?
Division is an important skill to have. If you
know how to divide, you will know how to:
Share something equally among friends
Figure out how much each item costs
Answer division problems in class
And so much more!
How do you divide?
There is more than one way to find the
answer to a division problem!
Let’s try 12 ÷ 4
12 ÷ 4
Split 12 cookies evenly into 4 groups.
How many cookies are in each group?
12 ÷ 4
There are 3 cookies in each group.
12 ÷ 4 = 3
6÷2
Split the 6 triangles up evenly into the 2 cups
How many triangles go in each cup?
6÷2
There are 3 triangles in each cup.
6÷2=3
Now YOU Try!
4÷2
Split the 4 triangles up evenly into the 2 cups
How many triangles go in each cup?
A. 1
B. 2
C. 3
D. 4
6÷3
Split the 6 triangles up evenly into the 3 cups
How many triangles go in each cup?
A. 4
B. 3
C. 2
D. 6
8÷2
Split the 8 triangles up evenly into the 2 cups
How many triangles go in each cup?
A. 1
B. 2
C. 3
D. 4
9÷3
Split the 9 triangles up evenly into the 3 cups
How many triangles go in each cup?
A. 9
B. 3
C. 2
D. 6
Division and Multiplication
are Opposites!
Did you know that the same three
numbers that are used to multiply are used
to divide? For example:
• 12 ÷ 3 = 4 and 4 x 3 = 12
• 12 ÷ 4 = 3 and 3 x 4 = 12
The numbers 3, 4, and 12 are a
fact family
Fact Family
A fact family is a collection of related
multiplication and division facts made from
the same numbers.
6 7 42
6 x 7 = 42
7 x 6 = 42
42 ÷ 7 = 6
42 ÷ 6 = 7
Fact Families
12 ÷ 4 =
12 ÷ 4 =
12 ÷ = 4
x 4 = 12
4 x = 12
=
Fact Family:
3
3, 4, 12
Now YOU Try!
Fact Families
20 ÷ 5 =
20 ÷ 5 = 6
20 ÷ 6 = 5
6 x 5 = 20
5 x 6 = 20
=
?
Which number belongs in the yellow box?
A. 5
B. 4
C. 20
D.10
Fact Families
35 ÷ 7 =
35 ÷ 7 = 6
35 ÷ 6 = 7
6 x 7 = 35
7 x 6 = 35
=
?
Which number belongs in the yellow box?
A. 5
B. 7
C. 6
D.1
Fact Families
24 ÷ 2 =
24 ÷ 2 = 6
24 ÷ 6 = 2
6 x 2 = 24
2 x 6 = 24
=
?
Which number belongs in the yellow box?
A. 12
B. 4
C. 24
D. 2
Oops! Try Again.
Remember to split the triangles evenly between the cups
For example, 6 ÷ 2
There are 3 cookies in each cup.
6÷2=3
Oops! Remember…
A fact family is a collection of related
multiplication and division facts made from
the same numbers.
6 7 42
6 x 7 = 42
7 x 6 = 42
42 ÷ 7 = 6
42 ÷ 6 = 7
Correct!
Great Work!!!
Correct!
Great Work!!!
Correct!
Great Work!!!
Correct!
Great Work!!!
Correct!
Great Work!!!
Correct!
Great Work!!!
Correct!
Great Work!!!
When you want to divide…
Split things up into even piles
Know your fact families
Draw a picture
And if you get really confused…
ASK FOR HELP!
THE
END