Yes, 3/8 is a rational number. A rational number is defined as any number that can be expressed as a fraction, where both the numerator (the top number) and the denominator (the bottom number) are integers, and the denominator is not zero.
In the fraction 3/8, the numerator is 3 and the denominator is 8. Both of these are integers, and since the denominator is not zero, we can conclude that 3/8 meets the criteria for rational numbers. Additionally, rational numbers can be represented as a decimal that either terminates (like 0.375) or repeats (like 1/3 = 0.333…). Since 3/8 can be converted to the decimal 0.375, it confirms its status as a rational number.