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THE BIG IDEAS OF MULTIPLICATIONANDDIVISION

WHAT IS MULTIPLICATION?WHEN DO WE USE

MULTIPLICATION?

WHAT IS MULTIPLICATION?WHEN DO WE USE

MULTIPLICATION?

- 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 60 60 60
- 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

WHAT IS DIVISION?WHEN DO WE USE DIVISION?

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?

- 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?

- 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?

- 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?

- 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?

- Nikki has 15 stickers. She puts 5 stickers on

each page of her sticker book. How many pages

will she use?

- 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?

- Nikki has 15 stickers. She puts 5 stickers on

each page of her sticker book. How many pages

will she use?

GUZINTA

Children need to know their basic facts in order

to do mental math, to estimate, and to do higher

level math thinking.

- 42
- 6
- X 6 42
- X 7 42
- 6 7
- 42 7 7

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).