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Sixteen children are standing in four rows of four, one behind the other. They are each holding a card with a number on it. In each column, all four children are wearing clothes of the same colour.
Red |
Blue |
Yellow |
Green |
The children in yellow each have a number which is double the number of the child in the same row wearing red.
Some of the numbers that the children in red, blue and yellow are holding are missing. What should these numbers be?
How have the numbers of the children in green been worked out? What are the two missing numbers?
If there was another row of four children standing at the back, behind the fourth row, what numbers would they be holding?
There are three tables in a room with blocks of chocolate on each. Where would be the best place for each child in the class to sit if they came in one at a time?
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?
Can you dissect an equilateral triangle into 6 smaller ones? What number of smaller equilateral triangles is it NOT possible to dissect a larger equilateral triangle into?