Multiplication And Division 2
In this article, we will be learning about Multiplication and Division and the learning objectives are:
- Understanding division as equal sharing
- Understanding division as equal grouping
- Relating multiplication and division
Topic Recap:
Understanding division as equal sharing
- We divide when we share equally.
- Sharing equally means each group gets the same number of objects.
- To find the number of objects in each group, we need:
- The total number of objects
- The total number of groups
Start by distributing 1 object to each group.
Example:
Share 6 balloons equally between two children.
How many balloons does each child get?
Solution:
Let’s begin by giving 1 balloon to each child. Repeat until all the balloons have been equally distributed.
Each child gets 3 balloons.
Answer:
3 balloons
Question 1:
Share 10 lollipops equally between two children. How many lollipops does each child get?
- 5
- 6
- 3
- 4
Solution:
Start by distributing 1 lollipop to each child. Repeat until all the lollipops have been equally distributed.
Answer:
(1) 5
Question 2:
Put 9 bunches of grapes equally into 3 baskets. How many bunches of grapes are there in each basket?
3 groups of _________ =9
- 6
- 2
- 3
- 4
Solution:
Begin by putting 1 bunch of grapes in each basket. Repeat until all the bunches of grapes have been equally distributed.
3 groups of 3=9
Answer:
(3) 3
1. Maths concept: Understanding division as equal sharing
Example:
Divide 14 balloons into 2 equal groups.
Sharing equally means that each group will get the same number of items.
When you share 14 balloons equally into two groups, there will be 7 balloons in each group.
This can be represented as:
14÷2=7
‘÷’ means divided by.
We read the division equation above as ‘fourteen divided by two equals seven’. We can also say ‘Divide 14 by 2’.
This can also be represented as:
2 groups of 7=14
2×7=14
Question 1:
Look at the following.
Divide 16 candies into 4 equal groups.
- Choose the correct option to represent the sentence above.
- 4÷16
- 16÷4
Answer:
(2) 16÷4
- How many candies are there in each group above?
- 8
- 12
- 3
- 4
Solution:
16÷4=4
Answer:
(4) 4
Question 2:
Divide 15 crayons into 3 equal groups. How many crayons are there in each group?
- 5
- 6
- 3
- 12
Solution:
15÷3=5
Answer:
(1) 5
Question 3:
5 boys went fishing. They caught 10 fish altogether. Each boy caught the same number of fish. How many fish did each boy catch?
- 5
- 2
- 10
- 50
Solution:
10÷5=2
Answer:
(2) 2
Topic Recap:
Understanding division as equal grouping
- We divide by equal grouping when we put objects into groups of the same number.
- Equal grouping means to divide a number of objects into groups of the same number.
- To find the number of groups, we need:
- The total number of objects, and
- The total number of objects to be put in each group
Example 1:
Divide the elephants into equal groups.
There are 12 elephants.
Start by identifying how many elephants are to be put in each group.
If we divide the elephants into groups of 3,
There will be 4 groups of 3.
This also means that 4×3=12.
Similarly, if we divide these 12 elephants into groups of 4,
There will be 3 groups of 4 elephants each.
This also means that 3×4=12.
Question 1:
Divide 18 strawberries into groups of 3. How many groups of strawberries are there?
__________ groups of 3=18
- 5
- 6
- 7
- 8
Solution:
18÷3=6
6 groups of 3=18
Answer:
(2) 2
Question 2:
Look at the picture below.
- How many groups of 5 are there?
- 5
- 10
- 3
Solution:
Answer:
(3) 3
- Max wants to pack 5 cookies in each bag. How many bags does he need to pack the cookies above?
- 5
- 10
- 3
Solution:
15÷5=3
Answer:
(3) 3
2. Understanding division as equal grouping
Divide 20 toy planes into groups of 5.
There are 4 groups of toy planes.
We write a division equation to find the number of groups:
20÷5=4
Total number of objects Number of objects in each group = Number of groups
We can also say that:
4 groups of 5=20
4×5=20
Question 1:
Divide 12 apples in groups of 2.
- Choose the correct option that represents the statement above.
- 12÷2
- 2÷12
Answer:
(1) 12÷2
- How many groups of apples are there?
- 6
- 2
- 10
- 4
Solution:
12÷2=6
Answer:
(1) 6
Question 2:
Divide 12 children into groups of 6. How many groups of children are there?
- 6
- 2
- 3
- 12
Solution:
12÷6=2
Answer:
(2) 2
Question 3:
Mr Ng prepared 21 sandwiches for a party. He puts 7 sandwiches on each tray. How many trays did he need?
- 7
- 2
- 3
- 4
Solution:
21÷7=3
Answer:
(3) 3
Question 4:
Lindy uses 3 ice cream sticks to form a triangle. How many such triangles can she form using 24 sticks?
- 7
- 2
- 3
- 8
Solution:
24÷3=8
Answer:
(4) 8
3. Relating multiplication and division
There are 3 pots.
There are 5 flowers in each pot.
There are 15 flowers in all.
From the given picture, we can write 2 multiplication and 2 division equations:
- 5×3=15 and 3×5=15
- 15÷3=5 and 15÷5=3
Question 1:
Ron collected 10 bottles for recycling.
- Which two multiplication equations best represent the picture above?
- 2×5=10 and 5×2=10
- 10×2=5 and 10×5=2
Answer:
(1) 2×5=10 and 5×2=10
- Which two division equations best represent the picture above?
- 2÷5=10 and 5÷2=10
- 10÷5=2 and 10÷2=5
Answer:
(2) 10÷5=2 and 10÷2=5
Question 2:
What is the missing number?
- 6
- 2
- 16
- 4
Solution:
2×8=168×2=16
The missing number is 16.
Answer:
(3) 16
Question 3:
What are the values of X and Y?
- X=8,Y=5
- X=8,Y=40
- X=5,Y=40
Solution:
To find X,
40÷5=8
To find Y,
5×8=40
Answer:
(2) X=8,Y=40
In this article, we learnt division:
Continue Learning | |
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Numbers To 1000 | Multiplication And Division 1 |
Multiplication And Division 2 | Addition And Subtraction 1 |
Addition And Subtraction 2 | Fractions 1 |
Length 1 | Mass 1 |
Volume 1 | Money 1 |
Time 1 | Shapes And Patterns |
Picture Graphs 1 | Model Drawing 1 |
Model Drawing 4 |