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8

Here are the two previous pages from those materials (a pre-publication version found with a Google search): And here is the page containing the homework problem in question: The intent now seems pretty clear. Students know that you can join groups by adding them, but in the case where the groups are equal in size (e.g. five bags, each with nine goldfish), ...


3

This is an excellent example of a question which leaves both children and adults baffled. This is a truly meaningless question. Let's start with the fact that you add and multiply numbers whereas you join together sets (groups) of objects. The clause "multiply to join groups" may mean "use multiplication to find the total number of objects when joining ...


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