Colorectal surgery is a field in medicine, dealing with disorders of the rectum, anus, and colon.The field is also known as proctology, but the latter term is now used infrequently within medicine, and is most often employed to identify practices relating to the anus and rectum in particular.he word proctology is derived from the Greek words ÏÏÏÎºÏÏÏ proktos, meaning anus or hindparts, and -Î»Î¿Î³Î¯Î± -logia, meaning science or study. Physicians specializing in this field of medicine are called colorectal surgeons or proctologists.
Best Answer: To add a fraction to a decimal easily, you will have to convert them both into the same form. For example if you wanted to calculate 1/2 + 1.5, you could say 1.5=3/2, so 1/2+3/2 = 4/2 = 2. Or you could say that 1/2 = 0.5, and 0.5 + 1.5 = 2.
Here are the steps to adding or subtracting numbers in scientific notation 1  : Determine the number by which to increase the smaller exponent by so it is equal to the larger exponent. 2  Increase the smaller exponent by this number and move the decimal point of the number with the smaller exponent to the left the same number of places. Add or subtract the new coefficients. If the answer is not in scientific notation (i.e. if the coefficient is not between 1 and 10 ) convert it to scientific notation.