# What does it mean to double a number?

## What does it mean to double a number?

To get a double of a number, we add the same number to itself. For example, double of 2 is 2 + 2 = 4.

## What is the trick to guess the number?

Trick 3: Think of a number

1. Think of any number.
2. Double the number.
4. Subtract 3 with the result.
5. Divide the result by 2.
6. Subtract the number with the first number started with.
7. The answer will always be 3.

What is the double of 3?

6
When you add a number to itself, you are doubling the number, or multiplying by two. When you add 3 and 3, you double 3. 3 + 3 = 6, or 3 × 2 = 6. So double 3 is 6.

### What is the double of 9?

The answer of double 9 is 18.

### What is the double of 80?

What is even number?

Definition of even number : a whole number that is able to be divided by two into two equal whole numbers The numbers 0, 2, 4, 6, and 8 are even numbers.

## Is 10 an even number?

Hence, 10 is an even number.

## How can you guess someone’s age?

To do a number trick to guess someone’s age, start by asking them to use a calculator to multiply the first number of their age by 5. Then, have them add 3 before doubling the answer. Next, they should add the second number of their age. Finally, tell the person to subtract 6 and the answer will be their current age.

Is two even or odd?

even number
2 is the smallest even number. It is also the only even prime number.

### What’s the first even number?

The first even whole numbers are: 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, and so on. Notice in the number line, that between 6 and 8, for example, there isn’t any other even number. When this happens, the numbers are called consecutive even numbers. Similarly, 2 and 4, -6 and -4 are consecutive even numbers.

### Is 8 a even number?

8 is an even number.