This mathematrick is guaranteed to wow your friends and will make you look like a telepathic maths whizz.
Think of a number.
Add 4, then multiply the result by 4.
Subtract 8, then divide the result by 4.
Finally take away your original secret number. The answer is 2.
Think of another number.
Double it. Add 9.
Subtract 3. Divide by 2.
Subtract your original number.
The answer is 3.
Think of any three-digit number.
Add 7. Multiply by 2.
Subtract 4, then divide the result by 2.
Subtract it from the original number you thought of.
The answer is 5.
Impressed? Go and try it on your friends it’s sure to amaze.