stair - division by, kimberly anglin division…what is it? division is the action of separating...
TRANSCRIPT
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StAIR - Division
By,
Kimberly Anglin
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Division…What is it?
Division is the action of separating something into equal parts
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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:
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Share something equally among friends
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Figure out how much each item costs
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Answer division problems in class
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And so much more!
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How do you divide?
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There is more than one way to find the answer to a division problem!
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Let’s try 12 ÷ 4
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12 ÷ 4Split 12 cookies evenly into 4 groups.
How many cookies are in each group?
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12 ÷ 4
There are 3 cookies in each group.
12 ÷ 4 = 3
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6 ÷ 2Split the 6 triangles up evenly into the 2 cups
How many triangles go in each cup?
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6 ÷ 2
There are 3 triangles in each cup.
6 ÷ 2 = 3
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Now YOU Try!
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4 ÷ 2
Split the 4 triangles up evenly into the 2 cups
How many triangles go in each cup?
C. 3 A. 1 D. 4 B. 2
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6 ÷ 3
Split the 6 triangles up evenly into the 3 cups
How many triangles go in each cup?
C. 2 A. 4 D. 6 B. 3
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8 ÷ 2
Split the 8 triangles up evenly into the 2 cups
How many triangles go in each cup?
C. 3 A. 1 D. 4 B. 2
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9 ÷ 3
Split the 9 triangles up evenly into the 3 cups
How many triangles go in each cup?
C. 2 A. 9 D. 6 B. 3
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Division and Multiplicationare 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
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Fact Family
A fact family is a collection of related multiplication and division facts made from
the same numbers.
67 42
6 x 7 = 42 42 ÷ 7 = 6
7 x 6 = 42 42 ÷ 6 = 7
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Fact Families
12 ÷ 4 =
x 4 = 12 12 ÷ 4 =
4 x = 12 12 ÷ = 4
=
Fact Family: 3, 4, 12
3
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Now YOU Try!
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Fact Families
20 ÷ 5 = 6 x 5 = 20 20 ÷ 5 = 6
5 x 6 = 20 20 ÷ 6 = 5
= ?
Which number belongs in the yellow box?
A. 5 B. 4 C. 20 D.10
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Fact Families
35 ÷ 7 = 6 x 7 = 35 35 ÷ 7 = 6
7 x 6 = 35 35 ÷ 6 = 7
= ?
Which number belongs in the yellow box?
A. 5 B. 7 C. 6 D.1
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Fact Families
24 ÷ 2 = 6 x 2 = 24 24 ÷ 2 = 6
2 x 6 = 24 24 ÷ 6 = 2
= ?
Which number belongs in the yellow box?
A. 12 B. 4 C. 24 D. 2
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Oops! Try Again.
There are 3 cookies in each cup.
6 ÷ 2 = 3
Remember to split the triangles evenly between the cups
For example, 6 ÷ 2
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A fact family is a collection of related multiplication and division facts made from
the same numbers.
67 42
6 x 7 = 42 42 ÷ 7 = 6
7 x 6 = 42 42 ÷ 6 = 7
Oops! Remember…
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Correct!
Great Work!!!
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Correct!
Great Work!!!
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Correct!
Great Work!!!
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Correct!
Great Work!!!
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Correct!
Great Work!!!
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Correct!
Great Work!!!
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Correct!
Great Work!!!
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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!
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THE END