# How many zeros are there at the end of the first 100 multiples of 10?

111 zeroes

## Is there a trick for multiplying by 6?

There's no special rule for multiplying by 6. You just have to remember this. When you multiply an even number by 6, the last digit of the answer is the same as the number that's being multiplied.

## Is there a trick for multiplying by 7?

Multiply by 7 ? The second digits of the answers for numbers 1 to 10 do not repeat. So, there's really no secret trick for multiplying by 7.

Use subdivision to quickly calculate large numbers in your head. For example, if you have to find the result of 32 x 125, divide the first number in half and multiply the second number by two until you have an easy problem to solve (16 x 250; 8 x 500; 4 x 1000 = 4,000).

## How can you tell your brain faster?

10 tricks for doing fast math

2. Subtracting from 1,000. ...
3. Multiplying 5 times any number. ...
4. Division tricks. ...
5. Multiplying by 9. ...
6. 10 and 11 times tricks. ...
7. Percentage. ...
8. Quickly square a two-digit number that ends in 5.

## How do you find 3%?

Example 2. Find 3% of \$4,000. First write it as 0.

## How do you find 25% of a number?

To calculate 25 percent of a number, simply divide it by 4. For example, 25 percent of 12 is 12 divided by 4, or 3.

## What is 25% off?

Percent Off Table For 25.

20

42

## What number is 80% of 8?

Latest calculated numbers percentages
80% of 8 = 6.

56

70

## What number is 25% of 54?

Latest calculated numbers percentages
25% of 54 = 13.

400

## How do you find 8 percent of a number?

This can be solved in two stps:

1. Step 1: Write 15% as a decimal number: 15% = 0.

## What is an 8th of 100?

8 percent of 100? = 0.

8%

4

## What number is 20% of 15?

20% of 75 is 15. 100% of 75 is 75, therefore 20 percent of 75 equals 15.

3

10