To change a rational number to a decimal, you simply need to divide the numerator (the top number) by the denominator (the bottom number). For example, if you have the rational number 3/4, you would do the division 3 ÷ 4.
When you perform this division, you can use long division or a calculator. In this case, 3 divided by 4 equals 0.75. Therefore, the rational number 3/4 can be expressed as the decimal 0.75.
Keep in mind that some rational numbers will result in repeating decimals. For example, the rational number 1/3 results in 0.333…, which repeats indefinitely. This is still a decimal representation of a rational number.
In summary, changing a rational number to a decimal involves dividing the numerator by the denominator and interpreting the result, whether it’s a terminating decimal like 0.75 or a repeating decimal like 0.333…