How many zeros are there at the end of the first 100 multiples of 10?
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.
How do you get big math problems in your head?
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
- Adding large numbers. Adding large numbers just in your head can be difficult. ...
- Subtracting from 1,000. ...
- Multiplying 5 times any number. ...
- Division tricks. ...
- Multiplying by 9. ...
- 10 and 11 times tricks. ...
- Percentage. ...
- 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.
What number is 25% of 80?
What number is 15% of 280?
What number is 80% of 8?
Latest calculated numbers percentages