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Over the past year, since I took over the common-core math beat, I’ve been thinking a lot about fractions. As I wrote in November, the Common Core State Standards for mathematics emphasize fractions ...

Fractions can be added in different ways: When the denominators are the same, add the numerators. Sometimes the final answer can be simplified. close simplify (a fraction)To reduce a fraction to its ...

Each fraction has the same denominator. Use the numerators to order the fractions. The smaller the numerator, the smaller the fraction. The numerators are all the same. Use the denominators to order ...