#Magic trick with number how to#

This trick allows you to mentally calculate multiples of 5. Reverse the number that is the differenceĪmazingly, you get 1,089 every single time. Subtract the result by the number in reverse We’ve seen math magic tricks that get us 2, 7, 8, 15, and 37 consistently, but what about a large number like 1,089?Īrrange the digits from highest to lowest Subtract the result from the original number Here’s a cool magical math trick where the answer is always going to be 2: Notice you have the exact two-digit number you started with! Isn’t that cool?!įollowing the steps below will result in a number that contains the digits 1, 2, 4, 5, 7, 8:Īs you can see, the answer contains the digits 1, 2, 4, 5, 7, 8.

Start by thinking of any two-digit number In this simple trick, you will always end up with the same two-digit numbers. Multiply the results from step 1 and step 2Īre your children having trouble remembering the first seven digits of the number Pi?Īsk them to write down “How I wish I could calculate Pi” and count the letters in each word. For this example, we’re going to use 20 (×) 700. However, this one only works if one of the numbers is even.

#Magic trick with number how to#

We’ve found a way to teach children how to quickly multiply large numbers. (What you DON’T do is place the 14 between 6 and 8 like this ⏤ 6148.) Instead, what you do is “carry the one” to the hundredth place.Īnd just to make sure the rule of 11 still works, the byproduct of 68 ( × ) 11 = 748 If the original number = 68, then the sum of 6+8=14. What if the sum of the original numbers equals a 2-digit number? Then what do you do? Read more to find out. The byproduct of 21 and 11 is indeed 231. Place the sum between the two digits of your original number: There are many multiplication math magic tricks, but this one will allow your child to multiply any two-digit number with 11. Hence, the answer will always be the number 8. Subtract the original number from the sum Here’s a neat math magic trick that will have your child returning to the number 8: Think of a three-digit number that has the same sequence of numbers as 555, 888, etc. This next math trick will blow your child’s mind: Subtract the original number from the result Here’s another amazing math trick that never fails to dazzle. The first two digits are the child’s age (11) and the remaining two digits are their shoe size (06) – 1,106. Multiply today’s date 5 times and subtract it from the result Tell them to add their shoe size to the result (for example, the child’s shoe size is 6)

Have them write their age on a piece of paperĪdd today’s date (if it is the 23rd day of the month, the number should be 23) You easily guess any child’s age using the following simple math magic trick: Start by having your child select a number between 1 and 10 This is a magic trick that never fails ⏤ the final answer is always 7. Introducing an easier, more magical way to add the two numbers together:įigure out how much you added to each number to round it up to a multiple of 10. Imagine you are trying to add 536 and 389. For those who are unfamiliar, the secret is to make each number a multiple of 10. In fact, it’s a fairly common technique in math curriculums globally. This is one of the most useful ways to add large numbers. What’s even more remarkable is that the first digit (tens place) of the product will be half of the second digit (the ones place). You will notice that the last digit of the product is the same as the number that was multiplied by 6. Take any even number and multiply it by 6. Here are 19 simple but incredibly useful tricks to introduce to your students or children. Whether you are a parent or teacher trying to get children interested in math, showing them these tricks can help them become more engaged and curious about what else they can do with math. Want to make math more interesting for your child? Get ready for…