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
- 3,2,2
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: Break apart, Number house
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