Which fraction can be replaced with 0 when estimating with fractions?

1/12345 is a likely candidate

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3/4

When estimating with fractions, the fraction that can be replaced with 0 is the fraction that is closest to 0. To determine which fraction this is, you can look at the numerator of each fraction. The numerator is the number above the fraction line.

For example, if you have the fractions 3/4, 1/2, and 2/3, you can compare the numerators: 3, 1, and 2.

In this case, the fraction with the smallest numerator is 1/2. This means that when estimating with fractions, you can replace 1/2 with 0.

So, when estimating with fractions, you can replace the fraction 1/2 with 0.