Comparison of whole numbers from 0 through 100 is grounded in their quantities and place-value structure: for two-digit numbers, the tens digit determines the greater number unless the tens are equal, in which case the ones digit determines it. The symbols , , and express greater than, less than, and equal to, and number-line position provides a spatial model of these relationships; comparisons are limited to this range and do not include larger numbers, decimals, or negative numbers.
To compare two numbers, decide which number is greater, which is less, or whether they are equal.
Use these symbols:
For two-digit numbers:
Example: Compare and .
Both numbers have tens, so compare the ones digits:
So, is greater than :
On a number line, is to the right of , which also shows that is greater.
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