Math Tricks

Here are a few cool math tricks that you can try out at home! They will help you with mental math and skills such as addition and subtraction.

The Dice Trick

Take 5 dice and roll them onto a surface. Tell your friend that you have an amazing power to read through dice. While you are using your amazing powers to read through the dice, secretly add all of the dice numbers up. Then subtract that number from 35. Yell the number out loud!Flip the bottom of dice up and then have your friend add those numbers up...and if it works correctly...it will be the number that you yelled out loud!

Magic Addition

This is a really strange trick that uses addition and subtraction. Here is what you do.

Ask a friend to write down any four digit number, but it cannot end in a 1.

Let's say they picked 5385.

Write that number on top of a paper and tell them that you will have the answer for their math question before even knowing what to write down. Put a 2 in front of the number they picked and write down the first three numbers (2538). Now the last number you have to always subtract by 2. So the last number is a 5 and 5-2 is 3. The answer to the question will be 25383.

This is what your paper should look like

5385

________

25383

Now ask your friend to pick another four digit number. Let's say they pick 2564. Subtract each number by 9. (9-2=7, 9-5=4, 9-6=3, 9-4=5). You will write your answer for each question underneath their number. This is what your paper will look like now.

5385

2564

7435

________

25383

Now repeat the same step as before. Your friend will pick another number and you will subtract through that number. Lets say they pick 3432. Subtract each number by 9. (9-3=6, 9-4=5, 9-3=6, 9-2=7). This is what your paper will look like now.

5385

2564

7435

3432

6567

______

25383

If you have done your work correctly it should add up!!