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![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIr_B0I53ynr-xNsvRT2o6dlYbfg7RVs3uQjty5Qxcpu0otAjEO6yxt3HZ7l4C7ZcNTU0A9jc2wBu0Ri-g9uksSA10VUWT8HFXIz02-Y8ifnNDicjPW5BFWnRn5zrWatd3JwdO7xN2M-Dz/s200/minus+-+Edited.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpsLM8BDW9Ge8Icdsh6dwgzkPkvbNMr2znO-kr4skTjxNha0f5wdpU46gdceVror0Qv9H1CwwLKImMxKbmC2SfbsqAzg1vBv0sy_V3J57lEFyU0PACG_PYM56ytonBs4vPDut41OuGMn59/s200/divide+-+Edited.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPijED24uwPB1mc9Wz4njOUBNjOAtXBr5AEVzjAAAksfBv02nhjmGeZ6AKOgKmDiTdxl9fFvPzEQ3b0w84HJCWanIs_XFPb0V3liwsX_qEKp1zjsezf0DC_r3l_d3jzzg_vxcyLXfT4spI/s200/multiply+-+Edited.png)
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This is a sudoku puzzle.
It is made up of a 4x4 picture grid.
Some of the pictures are already in place in the grid.
The others are in a pile to the left of the grid.
Your task is to input the missing pictures.
Each row and each column have the same pictures in them [add] [subtract] [multiply] [divide].
A blue frame appears around each inputted picture.
You can move the inputted pictures around within the frames at any time.
* Take care, when you add the last one the grid becomes "frozen".
To start the activity again simply refresh the page.