Chapter 7 Multiplication and Division (x3, x4 and x6)

Chap 7 Multiplication and Division

Time table 3, 4 and 6

Learning Objectives:

a) Use the multiplication table of 3,4 and 6 to multiply and divide. 

Let's recap! Time table 3

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There are 27 cherries altogether.

There are 9 groups of 3. So,

 $9\ \times3=27$  

We have seen that 9 x 3 = 27.

Let us recall the multiplication table of 3 to see what happens when we multiply other numbers by 3.

0 x 3 = 0

Multiples of 3 are 3,6, 9,12,15,18,21, 24,27, 30.....

We can see that 9 x 3 is 3 more than 8 x 3.

Look at this pictures.

3 x 2 = 2 x 3

A truck has 6 wheels.

How many wheels do 3 trucks have?

3 x 6 = 6 x 3

= 18

3 groups of 6 wheels.

3 groups of 6 = 6 + 6 + 6

= 6 x 3

=18

3 trucks have 18 wheels.

Do you remember?

Do you know the difference between putting objects into 3 groups and into groups of 3?

Put 24 tomatoes into groups of 3

Put 24 tomatoes into groups of 3

 $24\ \div3\ =\ 8$  
There are 8 groups of 3 tomatoes.

 $24\ \div3\ =\ 8\$  

is a division sentence.

There are 18 birds on 3 trees. There is an equal number of birds on each tree. How many birds are there on each tree?

 $18\ \div3\ =\ 6$  
There are 6 birds on each tree. 

You can check your answer using multiplication:

6 x 3 = 18

Multiple Select

There are 5 groups of apples. Each group has 3 apples. How many apples are there altogether?

( Choose two the correct answer based on this word problem)

• 5 x 3 = 15

• 3 x 5 = 15

• 5 groups of 3

• 3 groups of 5

Fill in the Blanks

 $3\ \times9=?$  

Fill in the Blanks

 $?\ \times3\ =\ 30$  

Fill in the Blanks

Mrs Tan wants to give 18 exercise books equally to 3 pupils. How many exercise books will each pupil receive? ( Write your answer below)

Fill in the Blanks

7 x 3 is

less than 8 x 3

Multiple Select

9 x 3 is ______ than 8 x 3.

• 3 more than

• 3 less than

Fill in the Blanks

7 x 3 is 6 less than

x 3.

Multiple Choice

7 x 3 is ____ more than 4 x 3.

• 3

• 6

• 9

• 12

Fill in the Blanks

 $27\ \div\ ?\ =\ 3$  

Fill in the Blanks

 $3\ \times\ 11=?$  

Fill in the Blanks

 $?\ \div\ 3\ =12$  

Let's recap! Time table 4

5 cats have 20 paws altogether.

There are 5 groups of 4

= 5 x 4

= 20

We have seen that 5 x 4 = 20

Let us recall the multiplication table of 4 to see what happens when we multiply other numbers by 4.

0 x 4 = 0

Multiples of 4 are 4, 8,12,16,20,24,28, 32,36,40.....

Fill in the Blanks

Tom and Rita each have 2 packets of markers. Each packet has 6 markers. How many markers do they have altogether? ( Write your answer below)

Fill in the Blanks

Winston has 20 caps. He wants to put 4 caps in each basket. How many baskets will Winston need?

Multiple Select

Ticks the correct multiplication sentences below.

• 4 x 4 = 13

• 4 x 9 = 25

• 4 x 8 = 32

• 7 x 4 = 21

Fill in the Blanks

 $4\ \times\ ?\ =\ 32$  

Fill in the Blanks

 $9\ \times\ 4\ =\ ?$  

Fill in the Blanks

 $4\div1=?$  

Fill in the Blanks

Mrs Lee has $16. She gives each of her daughter $4 and has no money left. How many daughter does Mrs Lee have? (Write your answer below)

Multiple Select

Ticks all the multiples of 4.

• 44

• 42

• 20

• 12

Let's recap! Multiplying and dividing by 6

0 x 6 = 0

Let us look at some multiples of 6 to see what happens when we multiply numbers by 6. We can also count on in sixes from 0 to helps us find multiples of 6.

Multiples of are 6,12,18,24,30,36,42,48,54, 60 ....

Fill in the Blanks

Tom has 5 boxes of seashells. Each box has 6 seashells. How many seashells does Tom have altogether? (Write your answer below)

Fill in the Blanks

A grasshopper has 6 legs. How many legs do 9 grasshopper have?

Fill in the Blanks

Put these robots into groups of 6. How many groups are there?

Fill in the Blanks

 $12\div6=$  ?

Fill in the Blanks

 $7\times?\ =\ 42$  

Multiple Choice

 $36\ \div6=?$  

• 9

• 7

• 6

Multiple Select

Ticks all are NOT multiples of 6.

• 54

• 32

• 30

• 22

• 14