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Using the area method . Example: 725 x 4; Multiplying 2-digit numbers. Example: 83 x 37; ... For each rectangle on the grid multiply the numbers at the edge of the grid.
How to use Napier’s method. Example: 37 x 91; Example: 653 x 72; Practise: Napier’s method. Question: spot the mistake; ... Multiplication using Napier's method uses a grid to multiply numbers.
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