Number Line & Ordering
Section: ArithmeticBank code: ARI-NLOGRE frequency: MediumPro
1. Core Idea
The number line turns abstract comparisons into pictures. Everything to the right is greater; everything to the left is smaller. That one rule survives negatives, fractions, decimals and variables.
Most ordering questions on the GRE mix types (a fraction, a decimal, a root, a percent) precisely to see whether you convert to a common form before comparing.
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