Monday, 3 November 2014

Fraction Comparison Reflection

You know how to compare fractions using cross products, LCD, and logical reasoning. When is it better to use one method over another?

You should use cross products when the fractions are small numbers and easy to work with:



You should use LCD (Least Common Denominator) when the denominators are different:


You should use logical reasoning when you can easily turn the fraction(s) into a benchmark fraction, or when you can see that one fraction is less than half, and the other is more than half, etc.



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