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In this video, you will learn the -2 formula in abacus, also known as the +3 - 5 formula, which is an important technique used for quick and accurate subtraction. This method is especially useful when direct subtraction is not possible, making calculations easier and more efficient.
The minus two formula in abacus is part of the small friends subtraction method, where numbers are broken down into simpler steps. This approach helps children understand calculations clearly and apply them with confidence.
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