Year 4 Exam > Year 4 Notes > Year 4 Mathematics > Divide by 2, 5
Divide by 2, 5 | Year 4 Mathematics PDF Download
How to divide by two
To understand division by two, let's consider a simple example with frogs.
Imagine we have 6 frogs.
To divide them by 2, we split them into two equal groups.
Each group will have 3 frogs, so 6 divided by 2 equals 3 (6 ÷ 2 = 3).This is akin to the multiplication fact: 3 x 2 = 6.
Examples
Example 1: Sharing Spiders
Sindhu and Selasi have 16 spiders between them. They share them equally. How many do they each get?
There are 16 spiders altogether.Divided them into two equal groups.
There are 8 spiders in each group. So you can say that:
16 ÷ 2 = 8
Sindhu and Selasi each get 8 spiders.
Example 2: Cakes Division
Here are 10 cakes.
Dividing them by 2, we distribute them equally into two groups.
With 5 cakes in each group, 10 divided by 2 equals 5 (10 ÷ 2 = 5).
Correlating this with multiplication: 5 x 2 = 10.
Divide by 5
How do you divide?Division is about splitting a number into equal parts.
It involves two main methods:
- Sharing
- Grouping
Sharing Method
Sharing involves distributing objects equally among a specified number.
For example:
Given 15 counters, distributing them equally onto 3 plates.
How many counters are there on each plate?
Each plate will have 5 counters.
Mathematically, this is represented as 15 ÷ 3 = 5.
Grouping Method
Grouping is about finding how many groups of a certain size can be made from a given number.
For instance:
Considering 15 counters, determining how many groups of 3 can be formed.
There are 5 groups of 3 counters each.
This is expressed as 15 ÷ 3 = 5.
Remember
- Sharing and grouping are methods for solving division problems.
- Sharing works well when dealing with smaller numbers.
- Grouping is effective when the numbers become larger.
Example
Example: Let’s look at dividing by 5 by grouping.
What is 30 ÷ 5?
I need 30 objects and I need to put them into groups of 5.
The answer is the number of equal groups you have after grouping all your objects.
Here are 30 cubes.
How many groups of 5 are there?
There are 6 equal groups of 5. So:
30 ÷ 5 = 6
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FAQs on Divide by 2, 5 - Year 4 Mathematics
| 1. How do you divide by two? |  |
Ans. To divide a number by two, you simply need to cut the number in half. For example, if you have the number 10, dividing by two would give you 5.
| 2. What is the method to divide by 5? | |
Ans. To divide a number by 5, you can either multiply the number by 0.2 or simply move the decimal point one place to the left. For example, dividing 25 by 5 would give you 5.
| 3. How is dividing by 2 different from dividing by 5? | |
Ans. Dividing by 2 means splitting a number into two equal parts, while dividing by 5 means splitting a number into five equal parts. The result will be different based on the divisor used.
| 4. Can you provide an example of dividing by 2 and 5? | |
Ans. Sure. If you have the number 20, dividing by 2 would give you 10, and dividing by 5 would give you 4.
| 5. Why is it important to understand how to divide by 2 and 5? | |
Ans. Understanding how to divide by 2 and 5 is important in everyday situations such as splitting items equally among a group or calculating discounts and proportions. It is a fundamental math skill that is useful in various scenarios.
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Dec 22, 2024 Last updated |
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