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Cross-Reducing
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Mathematics, Science
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4th - 6th Grade
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Hard
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Tanya's teacher emphasizes writing answers in simplest form. Tanya multiplies fractions 2/3 and 9/10, initially getting 18/30, which she simplifies to 3/5. Her sister introduces cross-reducing, a method to simplify fractions before multiplying. By cross-reducing, Tanya learns to simplify 2/3 and 9/10 directly to 1/1 and 3/5, resulting in a final answer of 3/5. The lesson covers cross-reducing and its application in fraction multiplication.
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