These 7 impressive math tricks will blow your mind

6/13/2019

5,110 views

$Science Story: These 7 impressive math tricks will blow your mind$

Math can be fun, and even some simplest equations and rules may surprise you. Prepare a calculator and try these funny tricks with numbers. Attention: some of them are hacks that can be highly useful in your everyday life!

#1

Science Story: Think of any three-digit number in which each of the digits is the same, such as 222 or 888. Add the digits together. Divide the three digit number by this number. The answer is 37.

What was your initial number? Did it work?

#2

Science Story: "How I wish I could calculate pi." Count the number of letters in each word of this sentence, and it will give you the first seven digits of π. 3.141592

#3

Science Story: Select a number from 1 to 6. Multiply the number by 9. Multiply it by 111. Multiply it by 1001. Divide the answer by 7. The answer will contain the digits 1, 2, 4, 5, 7, and 8.

Did it work? What was your first number?

#4

Science Story: Take a number. Double it. Add 9. Subtract 3. Divide by 2. Subtract your original number. Your answer should be 3.

#5

Science Story: An easy trick to multiply two double digit numbers: Subtract each number from 100. Add these values together. 100 minus this number is the first part of the answer. Multiply the digits from Step 1 to get the second part of the answer.

Did you try it? Would you use this method in your everyday life?

#6

Science Story: If you multiply 6 by an even number, the answer will end with the same digit. The number in the tens place will be half of the number in the ones place.

6 x 4 = 24
6 x 6 = 36
6 x 2 = 12

Did you know?

#7

Science Story: To quickly square a two-digit number that ends in 5, multiply the first digit by itself plus 1. Then put a 25 at the end.

Have you ever heard about these tricks and hacks? Which one amazed you the most? Do you know any other tricks?

Tell us in the comments!

SHARE this article with someone who loves SCIENCE and MATH!

#Science #IQ #knowledge

What are your thoughts on this subject?

14 Comments

ralphdrambach

Number seven should be multiply first digit by itself, then add the first digit to that product and then put 25 at the end. For example, 45*45=2,025, 4*4=16+4=20, add 25 to the end and you get 2,025. It works every time!

Yvonne Benn

All the calculations that “magically” end with a number you predict are based on the same principle.

Cindy Ursan

Fun! I failed high school math, so I’m sure glad my phone has a calculator!!🤓

steve

#2: May I have a large container of coffee, madam. This gives 3.14159265, Pi to 9 digits. As to #5, I tried 2 different 2-digit numbers 6 times, and couldn't get anywhere near the results that were suggested.

lhreese

Math is fun and this is great!

Ilias Tsiabardas

Today I can not focus because of a terrible toothache ,thank you for your information ,i would try another day

Wilma Wilson

Good to get your brain to work.

David K. Anderson

Me neither. can someone please explain?

Chris Garrett-Petts

Terrible instructions

Thomas Begeng

Also - to represent pi (3.14159265) as a fraction instead of 22/7 which works out as 3.1428571 correct to only 2 decimals - try 355/113 = 3.14159292 correct to within 3 parts per 10 million!

Ian Swindale

Since I once got 0/100 in a maths exam and had to have special coaching to get through what was then known in the UK as "O" levels all of this was way beyond me

hector tubens

Since Math was my major, loved the examples given.

dancohenour

Example #6 makes me think of what you can do with multiples of 9.

ninakamwene

Hog wash

People also liked

Interesting Facts

5 scary animals with an undeserved reputation 8/5/2021
by brian l

animals Story: 5 scary animals with an undeserved reputation

shutterstock

We evolved to take animal threats seriously. But sometimes the animal in question is a show off. Many dangerous looking animals are harmless.

#animals #knowledge

7 amazing facts EVERYBODY should know! 7/22/2021
by Della Moon

Science Story: 7 amazing facts EVERYBODY should know!

shutterstock

Keep reading to learn the least expected facts about a volcano that erupts blue lava, koalas and grasshoppers.

#Science #Nature

7 amazing facts about regular household objects 6/21/2021
by Della Moon

Science Story: 7 amazing facts about regular household objects

shutterstock

Our appliances and furniture may seem like not the most interesting things in our life, but once you read these 7 cool facts you'll change your opinion about some of them.

#Science #History #Society