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In this video, you will learn the -3 formula in abacus, also known as the +2 - 5 formula, a key technique used for quick and accurate subtraction. This method is especially helpful when direct subtraction is not possible, allowing children to solve problems more efficiently.
The minus three formula in abacus is part of the small friends subtraction method, where numbers are simplified into smaller steps. This makes it easier for kids to understand and apply the concept with confidence.
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