Comparing Fractions with the Same Numerator or the Same Denominator | Math with Mr. J
From Math with Mr. J
10 min3rd4thMath
Summary
How to compare and order fractions -- deciding which is greater by using common denominators, benchmarks, or pictures. Mr. J shows more than one strategy.
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Teaching resources
Discussion questions
To compare fractions fairly, you need parts of the same size -- a common denominator helps.
- Why can't you just compare the top numbers of two fractions?
- How does a common denominator make comparing easier?
- Which is bigger, 2/3 or 3/4, and how do you know?
Quick work-a-long
Words to know: compare, common denominator, greater than, less than
- Put 1/2, 1/4, and 3/4 in order from least to greatest.
- Compare 2/5 and 1/2 and explain your reasoning.