For example, if your number is 16, take the one and six and add them to make seven. Your answer should be 4. These three tricks are arranged from easiest to hardest (smallest numbers to biggest). Math Number Tricks help teach basic math skills. The Number 4 Trick The same basic trick also works with 4. Fourth graders love these tricks! Add 4, then multiply the result by 4. This trick is extremely simple in that you have total control on the outcome. Finally take away your original secret number. Kids love learning magic tricks. (Eg: If a number is 2, then double the number will be 2 x 2 = 4) Step 3: Tell them to add 5 to that number. Subtract the remarkable 4. Most of us appreciate a good magic trick and the thing that's cool about this kind of trick is it's hard for the person you do it on to figure it out. To read someone's mind with math, ask your partner to pick a number between 1 and 10. Think of another number. Math number tricks are great for practicing addition, subtraction, multiplication, and division. Think of a number, do some arithmetic, tell me your result, and I can instantly say what number you started with. Add the first odd prime number to the new total. The answer is 2. For the grand finale, you ask for the final answer. Finally take away your original secret number. 4 … Take the number that you've chosen and multiply it by nine. A Street magic stunt: Quick think of a number. Divide their current number by the original number, then subtract 7 from the answer. The answer is 2. Ask your friend to quickly think of a two-digit number between 1 and 100, both digits odd and both digits different from each other. Think of another number. The best “number tricks” are probably deserving of a better name: “Mental Magic” or “Mathematical Deception.” Then again, number tricks does justice to the underlying simplicity of the best and most fun mathematical illusions. Subtract 8, then divide the result by 4. It's fun to amaze friends and relatives and have them scratch their heads and think "wonder how he did that one?" Ok, Im gonna play a trick on ALL of you. The answer is that you can use the picture method above, trying different arithmetic until you “see” a final answer. Street magicians like David Blaine often use this psychological trick. Take a number. This should give you a two-digit number. Add 12. Yes, you can use the first number trick, maybe just the once, or maybe vary it slightly by adding a different even number each time, but how do you create your own? Finding Someone’s Age - Number Trick. It can be two or it can be nine, or any number in between. Number Tricks: Check out more cool number tricks that students will love and will of course boost their mental math skills. Subtract the lowest common multiple of 2 and 3. Think of a number. I dunno whether you guys know of it, but here goes: 1) Think of an EVEN number (Call this the starting number) 2) Double it (Make sure you do it correct) 3) Add 20 (Make sure you do it correct) 4) Halve- it (Make sure you do it correct) 5) Take away the 'starting number' from your current sum (Make sure you do it correct) How can I make my own “think of a number” trick? Below are several number ruses, ranging from … Multiply the result by 1/4 of 20. Pick a number between two and nine. First up, this trick doesn't always work! They have fun doing the math number tricks, but … Concentrate, the answer is ... 37! Double it. Tell your partner to multiply their number by 2, then multiply the new number by 5. Take off the last digit and you will be able to work out how much the coins are worth! Step 2: Then ask your friend to double it. Think of a number. Finish by guessing the answer, which should always be 3. Divide by 2. Magic: the statistical "37" number force trick. These tricks come in two types: Think of a number (but don't tell me), do some arithmetic with that number, and I can predict your result. Subtract your original number. Amaze your friends and relatives with these number-based mind tricks. Take the two digits of the number and add them together. Subtract 8, then divide the result by 4. Add 4, then multiply the result by 4. You can pick any number divisible by 2 to be added. How to Do a Simple Number Mind Trick. The secret lies in Step 3 where you ask them to add a number. Step 1: Ask your friend to think of a number in mind. The final answer will always be the number you asked them to add in Step 3 divided by 2. Trick 1: Play this simple mind reading trick with your friends, neighbours and prove your intelligency.