Cooking requires a firm grasp of fractions due to the measuring required to follow a recipe correctly. Whether you are following a recipe or have another reason for halving a fraction, if you need to divide a fraction in half, the process is remarkably simple. Follow the basic formula for dividing a fraction by two, and you can then continue with your mission -- culinary or otherwise.
Write the fraction you wish to divide on a sheet of paper.
Create a simple multiplication problem to half the fraction. For example, if you wish to halve the fraction 5/7, write "* 2" beside the denominator "7." There is no operation to perform to the numerator.
Multiply the denominator by 2 to halve the fraction. Using the same example, 7 * 2 = 14. This means that half of 5/7 is 5/14.