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Use the information about the ducks on a particular farm to find out which of the statements about them must be true.

You Never Get a Six

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How Big Are Classes 5, 6 and 7?

Age 7 to 11
Challenge Level

Four pupils from Class 4, Ben, Ali, Katie and Charlene, decided to make graphs of the sizes of the seven classes in the school.

Ben and Ali found out how many children there were in Classes 1, 2 and 3.
Katie and Charlene found about Classes 5, 6 and 7.
Of course they all knew the number of children in Class 4.

Ben and Ali drew a bar chart. It looked like this:

graph showing number of children in classes 1, 2, 3 and 4

 

Katie and Charlene drew this pictogram:

pictogram to show children in classes

 

Kate and Charlene have forgotten to add a key to their pictogram. What should the key say?

How many children were there altogether in Classes 5, 6 and 7?