Writing 3/8 as a decimal using the division method:

To convert any fraction to decimal form, we just need to divide its numerator by the denominator.

Here, the fraction is 3/8, which means we need to perform 3 ÷ 8.

This gives the answer as 0.375. So, 3/8 as a decimal is 0.375.

Thus, 3/8 as a decimal is 0.375.