You can use the #numbers
utility object, which methods you can see here: http://www.thymeleaf.org/apidocs/thymeleaf/2.0.15/org/thymeleaf/expression/Numbers.html
For example:
<span th:inline="text">$ [[${#numbers.formatDecimal(abc.value, 0, 'COMMA', 2, 'POINT')}]]</span>
Nevertheless, you can also do this without inlining (which is the thymeleaf recommended way):
<td>$ <span th:text="${#numbers.formatDecimal(abc.value, 0, 'COMMA', 2, 'POINT')}">10.00</span></td>