Grade 5 · Math · Lesson 15

Compare and Order Decimals

Decimals describe parts of a whole using place values smaller than 1. To compare or order decimals, line up the decimal points so the same place values stack. Then scan from the largest place to the smallest, just like you do with whole numbers.

What this lesson teaches

1Compare two decimals through the thousandths place using <, >, =
2Order a set of decimals from least to greatest by aligning place values
3Locate decimals on a number line between 0 and 1
4Use the benchmark 0.5 to decide whether a decimal is closer to 0 or to 1

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