Final answer:
To express the decimal 1.813 as a fraction m/n, the fraction is 203/250.
Step-by-step explanation:
To express the decimal 1.813 as a fraction m/n, we need to determine the value of m and n. The number after the decimal point, 813, will become the numerator (m) of the fraction. To find the denominator (n), we count the number of decimal places, which is three. Since n is always a power of 10, in this case 10^3, the fraction becomes 813/1000. Simplifying the fraction, we get 203/250.