Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to do percentages on a calculator [title] Review the general meaning of fractions. [step] A fraction is a comparison between two numbers, usually representing the size of a part of something to the size of the whole thing. The classic example is a pie that is cut into eight, for example, equal portions.

Ending1: The fraction has the root of the whole thing, and it's part of the equation to measure the whole thing. [title] Be accurate to account for the fraction as it is. Ending2: The fraction consists of eight or more parts, rather than a large portion. [substeps] Many graph makers choose to subtract how many parts of a fraction are required, rather than subtracting them all at once. Ending3: The top of the fraction, called the numerator, represents the number of pieces you select. The bottom of the fraction, called the denominator, represents the total number of pieces in the pie-in this case , 8. Ending4: [substeps] Fractions are expressed using an " x " shape, typically ending with a dotted circle. A fraction follows the principle that " fractions " are stacked on top of each other when based on the denominator in the fraction.

Answer format: ending1/ending2/ending3/ending4