Mathematics ACT Aspire Practice Test – Math Prep, Free Practice Exam, Study Guide

To express 0.3 as a fraction, we start by recognizing that the decimal represents three tenths of a whole. In fraction form, tenths are expressed with a denominator of 10.

To convert 0.3 to a fraction, you can write it as:

0.3 = 3/10

This fraction already represents the simplest form of three tenths, as both the numerator (3) and the denominator (10) have no common factors other than 1.

On the other hand, the other options do not accurately represent the decimal 0.3. For instance, 3/100 represents a smaller value (0.03), 1/10 is equivalent to 0.1, and 1/3 is equal to approximately 0.333, which is greater than 0.3. Thus, 3/10 is indeed the correct representation of the decimal 0.3 in fraction form.