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THE BIG IDEAS OF MULTIPLICATION AND DIVISION

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THE BIG IDEAS OF MULTIPLICATIONANDDIVISION

- To find the total in a number of equal groups – “a quick way to add”

- There are 4 children at a table. They each have 3 cookies. How many cookies do they have in all?

There are 4 children at a table. They each have 3 cookies. How many cookies do they have in all?

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

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

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

3 x 5 = 15

5

3

3 X 5 = 15 sq units

y

x

ALGEBRA

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

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

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 606060

4 x 60 = 240 miles

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

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?

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?

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?

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

Does this drawing look like multiplication or division?

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

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

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?

GUZINTA

42

6

- X 6 = 42
- X 7 = 42
- ÷ 6 = 7
42 ÷ 7 = 7

- 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).