This math topic focuses on identifying possible digits in a multiplication problem, particularly determining the ones digit of a product. The problems involve deducing which digits might correctly complete a multiplication equation, based on given images that present partially completed problems. Each problem is a multiple-choice question where the learner has to select the possible ones digit from a set of options. This introduction to digits and divisibility enhances understanding of basic multiplication and number properties.
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Each letter is a digit (0-9). Which digit is possible in the box with a question mark?