6 Christmas stars – a puzzle
Look at the picture. What do you notice?
What are Digit Dog and Calculating Cat trying to do?
What are you going to do first?
Check that each side totals 9.
What do you think? Can you do it another way?
To simplify the task
Use Numicon® shapes instead of numerals.
Use numbers / Numicon® shapes 1 to 6 and make each side total 9. Then try totals of 10, 11 and 12. See Number Round Up on https://nrich.maths.org/188