# What is half of 133 00

## Double and halve

This article is about doubling and halving in math. The following content is offered here:

- A
**Explanation**for doubling and halving numbers. - It will
**Examples**calculated for a better understanding. - You get
**tasks**or.**Exercises**with sample solutions. - A
**Video**explains fundamental relationships in mathematics. - A
**Question and answer area**on the subject of doubling and halving.

We'll look at how to double or halve numbers in a moment. First of all, however, it is very important that students know the numbers from 1 to 20 and can count forwards or backwards. If you can't do this yet, please read the article counting up + down first. On this website we also offer similar articles such as neighbor numbers or plus tasks + minus tasks up to 20.

**Explanation of doubling and halving**

Sometimes math is about doubling or halving numbers. This is exactly what we would like to deal with in more detail here. Let's start with doubling: To do this, you take a number and add the same number to it again.

- 1 + 1
- 2 + 2
- 3 + 3
- 4 + 4
- and so on.

When cutting in half, we reverse the step. We'll look at examples of doubling and halving right away. Before doing this, let's take a quick look at some of the mathematical backgrounds: Important: In 1st grade, multiplication and division are not normally used. Therefore only a short information about this follows.

Doubling:

**Note:**

A doubling is obtained by multiplying a number by 2.

**Note:**

Halving is obtained by dividing (dividing) a number by 2.

**Doubling and halving examples**

Let's look at examples in this area of math. Let's start with doubling.

**Examples 1**:

- 2 + 2 = 4
- 3 + 3 = 6
- 4 + 4 = 8
- 5 + 5 = 10
- 6 + 6 = 12
- 7 + 7 = 14
- 8 + 8 = 16

We go the opposite way with the halving.

**Examples 2**:

- 4 = 2 + 2
- 6 = 3 + 3
- 8 = 4 + 4
- 10 = 5 + 5
- 12 = 6 + 6
- 14 = 7 + 7

In principle, you only have to be able to carry out simple additions here.

### Doubling and halving tasks / exercises

Show:### Double + Halve video

### Examples and explanations

In the next video I'll show you how to double or halve numbers. Various examples are calculated and explained.

Next video »

### Doubling + Halving: Questions and Answers

In this area we look at typical questions and answers about doubling and halving numbers.

**Q: Are there any books on doubling and halving numbers?**

A: Yes there is. For example Math Stars 1 Basic Knowledge from the Oldenburg publishing house.

**Q: How do you generally double or halve numbers?**

A: You can double by multiplying by 2, halving by dividing by 2.

**Q: What other topics should I check out?**

A: Here is a list of important basic math topics:

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