In a number tree you split a number into two parts, and each part again into two.
If you add the two lower numbers, you get the number above them.
The numbers shown give the answer.
Example
For parents
What does this exercise practice?
The number tree shows that splitting continues step by step, paving the way for flexible calculating across several sub-steps.
Common pitfalls
Some children split only the top number and forget the second level. It helps to work down the tree branch by branch.
How to practice at home
Divide a handful of coins between two plates and split each plate once more. That turns the number tree into a game.
Related: Number Splitting, Number House
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