Taking Inventory

Muffles’ Truffles is a multiplication unit designed to generate the array or grid model (squares aligned in rows and columns) and to develop strategies such as: partial products (for example that one could solve 7x5 by using 5x5 + 2x5); doubling (for example that 8x5 is a double of 4x5); and doubling and halving (for example that 8x5 is equivalent to 4x10, the original array has just ben cut ... ................
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