The Lucky Number Trick
Discover a simple fun maths trick that will amaze your class.
What is the Lucky Number Trick?
1
Think of a Number
Start by choosing any number you like. It's your secret lucky number!
2
Follow the Steps
Add, subtract, and watch the magic unfold. It's like a number rollercoaster!
3
Surprise Ending
Your original number reappears! It's like it never left.
The Magical Steps
1
Step 1: Add 7
Take your secret number and add 7. Watch it grow!
2
Step 2: Subtract 3
Now, let's take away 3. The number shrinks a little.
3
Step 3: Add 2
Time to grow again! Add 2 to your new number.
4
Step 4: Subtract 6
For the grand finale, subtract 6. Abracadabra!
The Big Reveal
Ta-da!
🎉
Your final number is the same as your starting number. Magic!
Always Works
🔄
No matter what number you start with, the trick always succeeds.
Maths Wizardry
✨
You've just performed a mathematical spell. Feel the power of numbers!
The Secret Behind the Magic
Addition
We add 7 and 2, which totals 9 added to your original number.
Subtraction
We subtract 3 and 6, which totals 9 taken away from your number.
Balance
The additions and subtractions cancel out, leaving your original number.
Why It's Cool
Brain Power
It helps your class practise mental maths in a fun way.
Problem Solving
They learn to follow steps and predict outcomes.
Maths Magic
It shows how maths can be magical and surprising.
Try It Yourself!
Step 1: Choose Your Number
Pick any whole number. It can be big or small, your choice!
Step 2: Follow the Magic Steps
Add 7, subtract 3, add 2, and subtract 6. Keep track as you go.
Step 3: Reveal the Result
Check your final number. It should match your starting number. Magical!
Become a Maths Magician
1
Practise
Try the trick with different starting numbers. See how it always works!
2
Perform
Watch their amazed reactions!
3
Create
Can you invent your own maths tricks based on the same cancelling out principle? The possibilities are endless!