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To explain subtraction using the "ten to the top and ten to the bottom" method, start by illustrating how we can borrow from the next column to make subtraction easier. For example, if you have 52 - 28, you can take 10 from the 50 (making it 40) and add it to the 2 (making it 12). Now you can subtract 12 - 8 easily, which equals 4, and then subtract the tens: 40 - 20 equals 20. Finally, combine the results to find that 52 - 28 equals 24.

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1mo ago

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