Now, it’s time to subtract your original number from this answer. In this math trick, you can think of any number, even a three-digit number. An interesting math hack, isn’t it? Trick of Getting 15 as an Answer, Always! In fact, you will get 37 as your answer for every same three-digit number that you can think of. Divide the three-digit number with the result that you got in the previous step. Select any three-digit number with the same digits, such as 555. This is another math trick that you can try out with your friends and even with your teacher to impress them. A smart trick for math problems! Same Three-digit Numbers Resulting in 37! You can verify the answer with a calculator and you’ll get it right. Now, you can put 2 in the space and add 1 to 5 to get 627 as your answer. Step 4: If the number that you got from Step 2 is greater than 9, then put the one’s digit in the space and carry the ten’s digit.įor example, 57 x 11 = 5_7. Step 3: Once you have got the number, place that number between the digits of the number that you had in mind. Step 1: Think of any two-digit number and then separate the digits. This math trick is quite helpful when it comes to an easy multiplication method for two-digit numbers by 11. The final value that you get is your friend’s age. Now, subtract 1000 from the answer you got. Try it! Take the birth year of your friend. This cool math hack will surely be a hit among your friends. Magic, right? Guessing the Age of Your Friend Give it a try you will get 2 as your answer as well. Now, subtract the original number from the number that you just got. This math hack is simpler than the previous one. Try it with any number and follow these instructions⏤voila, you will always get 8 as your answer. After this, subtract the original number from the number that you just got. Now, subtract one from the chosen number. Trick of Getting 15 as an Answer, Always!.Same Three-digit Numbers Resulting in 37!.Trick of Getting 2 as an Answer, Always!.Trick of Getting 8 as an Answer, Always!.To get your final answer, take the first square and subtract the second: 256 - 4 = 252.Next, look at the difference between the original numbers and their average: 18 - 16 = 2.Once you've memorized the squares chart, you'll know that 16 x 16 is 256. For example, the average of 18 and 14 is 16. To multiply two numbers, first find their average (the number exactly between them).Memorize the squares from 1 to 20 (or higher, if you're ambitious).With a little extra work, you can use these squares to find the answer to other problems: X Research source
But for larger numbers, instead of trying to memorize hundreds of answers, it's more efficient to memorize just the squares instead (each number times itself). Memorizing your multiplication tables from 1 to 9 makes single-digit multiplication automatic. Squares charts give you a new way to multiply. Now multiply 25 by 20 (instead of ten) to get 500, and add 1 x 4 = 4 to get 504. X Research source For example, for 21 x 24, you start by adding 21 + 4 to get 25. If you try this, make sure you use that number everywhere that 10 is used above.
Multiply your answer by ten: 18 x 10 = 180.Subtract 10 from the second number, then add your answer to the first: 15 - 10 = 5, and 13 + 5 = 18. Let's look at numbers close to 10, like 13 x 15.This is easiest when multiplying two numbers that are both in the range of 11 to 19, but you can learn to use it for other problems: X Research source It can be a little tricky to remember at first, but once you have it down it can make multiplication much faster. This is another way of breaking a problem into parts. Try this method of turning one hard problem into two easier ones.
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