Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to estimate fractions [title] Decide if estimation is appropriate. [step] Estimating a fraction will give you the gist of the fraction. However, you'll seldom guess the exact answer with it.

Ending1: This means that regardless of how detailed, you can take uncertain factors into account before making an estimation. The calculation may be crude, mediocre, or funnier in that it doesn't adequately flatter your own results. Ending2: The main reason is because fractions are inherently hundreds of times more difficult to write. To produce accurate fractions, you'll need to prioritize your potential fraction and the number of units that need to be written. Ending3: If you are unsure about something, you'll need to test it a few times to get a read. However, you'll need to know the fraction well to get a good idea. Ending4: If you only need a general idea of the answer, estimations are helpful. However, if you need to give an exact answer, solve your equation with exact measurements.

Answer format: ending1/ending2/ending3/ending4