# Model Drawing 4

In this article, we will learn about Model Drawing and the learning objectives are:

- Word Problems involving 4 operations

**Topic Recap:**

**Word Problems Involving Multiplication**

**Example: **

There are 5 boxes. There are 8 cupcakes in each box. How many cupcakes are there in all?

**Solution: **

There are 8 cupcakes in each box.

Therefore, the total will be:

\(5 \times 8 = 40\)

There are 40 cupcakes in all.

**Answer:**

40 cupcakes

**Question 1: **

Hayley makes 6 apple pies. She uses 4 apples to make each pie. How many apples does she use in all?

- 12
- 24
- 28
- 30

**Solution:**

\(6 \times 4 = 24\)

**Answer:**

(2) 24

**Topic Recap:**

**Word problems Involving Division**

**Example: **

Jill shares 18 pencils equally with 2 friends. How many pencils does each of them receive?

**Solution:**

3 people shared 18 pencils.

Number of pencils each of them received

\(= 18 \div 3 \)

\(= 6\)

Each of them received 6 pencils.

**Answer:**

6 pencils

**Question 2: **

Daniel has a piece of wire 9 cm long. He cuts it into 3 equal pieces. How long is each piece of wire?

- 1 cm
- 24 cm
- 3 cm
- 27 cm

**Solution:**

\(9 \div 3 = 3\)

**Answer:**

(3) 3 cm

**Question 3:**

Jacky has 80 paper clips. He wants to place 10 paper clips in one box. How many boxes does he need?

**Solution: **

\(80 \div 10 = 8 \)

**Answer:**

8 boxes

**1. Word Problems Involving 4 Operations**

To solve a word problem, you can draw a model to help you visualise a question better.

**Example: **

Julie has 18 red markers and 14 blue markers. She packs the markers equally into 4 boxes. How many markers are there in each box?

**Solution: **

**Step 1:**

Find the total number of markers.

\(18 + 14 = 32\)

**Step 2:**

Find the number of markers in each box.

\(32 \div 4 = 8\)

There are 8 markers in each box.

**Answer:**

8 markers

**Question 1: **

Sunny bought 12 red pencils and 15 blue pencils. He repacked all the pencils into packets of 3. He sold all the packets.

- How many pencils did he buy altogether?

- 22
- 25
- 27
- 28

**Solution:**

\(12 + 15 = 27\)

**Answer:**

(3) 27

- If he sold all the packets of pencils, how many packets did he sell?

- 7
- 8
- 9
- 10

**Solution:**

\(27 \div 3 = 9 \)

**Answer:**

(3) 9

**Question 2:**

There are 40 students in a class. There are 3 groups of 5 boys and the rest are girls.

- How many boys are there in the class?

- 12
- 15
- 18
- 21

**Solution:**

\(3 \div 5 = 15\)

**Answer:**

(2) 15

- How many girls are there in the class?

- 15
- 25
- 35
- 40

**Solution: **

40 - 15 = 25

**Answer:**

(2) 25

**Question 3: **

There were 7 children at a party. Mrs Lim gave 4 pencils to each child. She had 5 pencils left.

- How many pencils did Mrs Lim give the children in all?

- 14
- 24
- 27
- 28

**Solution: **

\(7 \div 4 = 28\)

**Answer:**

(4) 28

- How many pencils did Mrs Lim have at first?

- 20
- 23
- 33
- 39

**Solution: **

\(28 + 5 = 33 \)

**Answer:**

(3) 33

**Question 4:**

Mrs Ong baked 2 cakes. She cut each cake into 6 equal pieces. She then gave them equally to her 3 children.

- How many pieces of cake were there?

- 8
- 10
- 12
- 14

**Solution:**

\(2 \times 6 = 12\)

**Answer:**

(3) 12

- How many pieces of cake did each child receive?

- 5
- 6
- 3
- 4

**Solution:**

\(12 \div 3 = 4 \)

**Answer:**

(4) 4

**Question 5: **

Mr Tan has 29 roses. He wants to arrange them into 4 bouquets of 9 roses.

- How many roses are needed for 4 bouquets?

- 18
- 27
- 36
- 45

**Solution: **

\(4 \times 9 = 36\)

**Answer:**

(3) 36

- How many more roses does he need?

- 7
- 20
- 25
- 65

**Solution:**

\(36 - 29 = 7\)

**Answer:**

(1) 7

In this article, we have learnt about Multiplication and Division:

- Word problems involving 4 operations
- Draw models to help you visualise a question better.