# Term 3 - September 10th (3-6)

##### Week beginning September 10th – Year 3 to 6

The Deca Tree

In the forest there is a Deca Tree.

A Deca Tree has 10 trunks,

and on each trunk there are 10 branches,

and on each branch there are 10 twigs,

and on each twig there are 10 leaves:

• One day a woodcutter came along and cut down one trunk from the tree.
• Then he cut off one branch from another trunk of the tree.
• Then he cut off one twig from another branch.
• Finally he pulled one leaf from another twig.

#### Solution

There are 10 leaves per twig
There are 10 twigs per branch
10 leaves x 10 twigs = 100 leaves per branch
There are 10 branches per trunk
100 leaves x 10 branches = 1000 leaves per trunk
There are 10 trunks per tree
1000 leaves x 10 trunks = 10 000 leaves on the tree

Cut off one trunk: 10 000 – 1000 = 9000 leaves left
Cut off one branch: 9000 – 100 = 8900 leaves left
Cut off one twig: 8900 – 10 = 8890 leaves left
Pull off one leaf: 8890 – 1 = 8889 leaves left

There are 8889 leaves left on the tree.

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We respectfully acknowledge the traditional owners of the land on which Edithvale Primary School is located and pay respects to their Elders past and present and emerging.