Discover a simple fun maths trick that will amaze your class.
Start by choosing any number you like. It's your secret lucky number!
Add, subtract, and watch the magic unfold. It's like a number rollercoaster!
Your original number reappears! It's like it never left.
Take your secret number and add 7. Watch it grow!
Now, let's take away 3. The number shrinks a little.
Time to grow again! Add 2 to your new number.
For the grand finale, subtract 6. Abracadabra!
Your final number is the same as your starting number. Magic!
No matter what number you start with, the trick always succeeds.
You've just performed a mathematical spell. Feel the power of numbers!
We add 7 and 2, which totals 9 added to your original number.
We subtract 3 and 6, which totals 9 taken away from your number.
The additions and subtractions cancel out, leaving your original number.
It helps your class practise mental maths in a fun way.
They learn to follow steps and predict outcomes.
It shows how maths can be magical and surprising.
Pick any whole number. It can be big or small, your choice!
Add 7, subtract 3, add 2, and subtract 6. Keep track as you go.
Check your final number. It should match your starting number. Magical!
Try the trick with different starting numbers. See how it always works!
Watch their amazed reactions!
Can you invent your own maths tricks based on the same cancelling out principle? The possibilities are endless!
The Lucky Number Trick