# THE BIG IDEAS OF MULTIPLICATION AND DIVISION - PowerPoint PPT Presentation

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## THE BIG IDEAS OF MULTIPLICATION AND DIVISION

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### the big ideas of multiplication and division what is multiplication? when do we use multiplication? what is multiplication? when do we use multiplication? – PowerPoint PPT presentation

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Title: THE BIG IDEAS OF MULTIPLICATION AND DIVISION

1
THE BIG IDEAS OF MULTIPLICATIONANDDIVISION
2
WHAT IS MULTIPLICATION?WHEN DO WE USE
MULTIPLICATION?
3
WHAT IS MULTIPLICATION?WHEN DO WE USE
MULTIPLICATION?
• To find the total in a number of equal groups

4
• There are 4 children at a table. They each have 3

5
• There are 4 children at a table. They each have 3

6
• In our classroom there are 3 rows of desks.
Each row has 5 desks. How many desks are there?

7
• In our classroom there are 3 rows of desks.
Each row has 5 desks. How many desks are there?

8
• In our classroom there are 3 rows of desks.
Each row has 5 desks. How many desks are there?

9

• 3 x 5 15

10
• 5
• 3
• 3 X 5 15 sq units

11
y x
ALGEBRA
12
• We are going on a trip. It will take four hours
if we drive at 60 miles per hour. How far will we
drive?

13
• We are going on a trip. It will take four hours
if we drive at 60 miles per hour. How far will we
drive?

14
• We are going on a trip. It will take 4 hours if
we drive at 60 miles per hour. How far will we
drive?
• 60 60 60 60
• 4 x 60 240 miles

15
• The store sells vanilla, chocolate, and
strawberry ice cream. You can have a sugar or
biscuit cone. How many different types of ice
cream cones can you buy at the store?
• 3 X 2 6 different ice cream cones

16
WHAT IS DIVISION?WHEN DO WE USE DIVISION?
17
WHAT IS DIVISION?WHEN DO WE USE DIVISION?
• 5 friends have 15 stickers. They are going to
share them fairly so that each child gets the
same number of stickers. How many stickers will
each child get?

18
• 5 friends have 15 stickers. They are going share
them fairly so that each child gets the same
number of stickers. How many stickers will each
child get?

19
• 5 friends have 15 stickers. They are going share
them fairly so that each child gets the same
number of stickers. How many stickers will each
child get?

20
• 5 friends have 15 stickers. They are going share
them fairly so that each child gets the same
number of stickers. How many stickers will each
child get?
• 15 5 3

21
• Does this drawing look like multiplication or
division?

22
• 5 friends have 15 stickers. They are going share
them fairly so that each child gets the same
number of stickers. How many stickers will each
child get?

23
• Nikki has 15 stickers. She puts 5 stickers on
each page of her sticker book. How many pages
will she use?

24
• Nikki has 15 stickers. She puts 5 stickers on
each page of her sticker book. How many pages
will she use?

25
• Nikki has 15 stickers. She puts 5 stickers on
each page of her sticker book. How many pages
will she use?

26
• Nikki has 15 stickers. She puts 5 stickers on
each page of her sticker book. How many pages
will she use?
• 15 5 3
• Does this look like multiplication or division?

27
• Nikki has 15 stickers. She puts 5 stickers on
each page of her sticker book. How many pages
will she use?

28
• 5 friends have 15 stickers. They are going share
them fairly so that each child gets the same
number of stickers. How many stickers will each
child get?

29
• Nikki has 15 stickers. She puts 5 stickers on
each page of her sticker book. How many pages
will she use?

30
GUZINTA
31
Children need to know their basic facts in order
to do mental math, to estimate, and to do higher
level math thinking.
32
• 42
• 6
• X 6 42
• X 7 42
• 6 7
• 42 7 7

33
What we want students to know about
multiplication and division
• When to use multiplication and division to solve
real problems. There are different models
(pictures, diagrams) for these situations.
• Multiplication and division are related. They
both involve groups of equal size
• Multiplication involves finding the total in all
the groups.
• Division finds the missing part (factor), when we
know one part and the total (product).