Question:

There are some children.

There are 500 boys.

The number of girls are 300 more than the number of boys.

How many children are there altogether?

3 m
There are 500 boys.

The number of girls are 300 more than the number of boys.

How many children are there altogether?

Adam has 50 stickers at first.

Adam gives away 20 stickers.

How many stickers are there left?

3 m
Adam gives away 20 stickers.

How many stickers are there left?

- Which model should we draw?

(1) Model Part-whole

(2) Model Comparison - Is the total given?

(1) Yes

(2) No - Who gets the shorter bar?

(1) At first

(2) Adam gives away - Number of stickers left =

Adam has 5 stickers at first.

Adam gives away 2 stickers.

How many stickers are there left?

3 m
Adam gives away 2 stickers.

How many stickers are there left?

- Which model should we draw?

(1) Model Part-whole

(2) Model Comparison - Is the total given?

(1) Yes

(2) No - Who gets the shorter bar?

(1) At first

(2) Adam gives away - Number of stickers left =

Adam has 300 stickers.

Bryan has 200 stickers.

How many stickers do they have altogether?

3 m
Bryan has 200 stickers.

How many stickers do they have altogether?

- Which model should we draw?

(1) Model Part-whole

(2) Model Comparison - Is the total given?

(1) Yes

(2) No - Who gets the shorter bar?

(1) Adam

(2) Bryan - What is the total number of stickers?

Adam has 3 stickers.

Bryan has 2 stickers.

How many stickers do they have altogether?

3 m
Bryan has 2 stickers.

How many stickers do they have altogether?

- Which model should we draw?

(1) Model Part-whole

(2) Model Comparison - Is the total given?

(1) Yes

(2) No - Who gets the shorter bar?

(1) Adam

(2) Bryan - What is the total number of stickers?

Find the value of 1 unit.

2 m
- 1 u + 5 = 10
- 5 + 1 u = 10
- 10 = 1 u - 5
- 10 = 5 + 1 u

Adam pays $20.40 for 1 marble and 4 stickers.

The marble costs $1.90 more than each sticker.

3 m
The marble costs $1.90 more than each sticker.

- What is the cost of 1 marble?
- How much is the cost of 4 marbles and 2 stickers?

There are some children.

There are 500 boys.

The number of girls are 300 less than the number of boys.

How many children are there altogether?

3 m
There are 500 boys.

The number of girls are 300 less than the number of boys.

How many children are there altogether?

Adam has 70 stickers at first.

Bryan gives him another 50 stickers.

How many stickers does Adam have in the end?

3 m
Bryan gives him another 50 stickers.

How many stickers does Adam have in the end?

- Which model should we draw?

(1) Model Part-whole

(2) Model Comparison - Is the total given?

(1) Yes

(2) No - Who gets the shorter bar?

(1) At first

(2) Bryan gives him - Number of stickers that Adam has in the end =

Adam has 7 stickers at first.

Bryan gives him another 5 stickers.

How many stickers does Adam have in the end?

3 m
Bryan gives him another 5 stickers.

How many stickers does Adam have in the end?

- Which model should we draw?

(1) Model Part-whole

(2) Model Comparison - Is the total given?

(1) Yes

(2) No - Who gets the shorter bar?

(1) At first

(2) Bryan gives him - Number of stickers that Adam has in the end =