Once you've had a go at the activities in our Place Value and Number Sense Feature, try the tasks below which will deepen your understanding even further.
![Fingers and Hands](/sites/default/files/styles/medium/public/thumbnails/content-id-6878-icon.gif?itok=nhFjvpiP)
![The Deca Tree](/sites/default/files/styles/medium/public/thumbnails/content-03-11-penta3-icon.gif?itok=D7FT8z2q)
problem
The Deca Tree
Find out what a Deca Tree is and then work out how many leaves there will be after the woodcutter has cut off a trunk, a branch, a twig and a leaf.
![The Thousands Game](/sites/default/files/styles/medium/public/thumbnails/content-id-2646-icon.gif?itok=e-TOeCWu)
problem
The Thousands Game
Each child in Class 3 took four numbers out of the bag. Who had made the highest even number?
![Four-digit targets](/sites/default/files/styles/medium/public/thumbnails/content-id-6342-icon.png?itok=eLvQga6t)
problem
Four-digit targets
You have two sets of the digits 0-9. Can you arrange these in the five boxes to make four-digit numbers as close to the target numbers as possible?