Which of the following values is closest to zero?
(A) -1
(B) $\frac{5}{4}$
(C) $1^{2}$
(D) $-\frac{4}{5}$
(E) 0.9
Since $\frac{5}{4}=1 \frac{1}{4}$ and $1^{2}=1$, then each of the choices (A) -1 , (B) $\frac{5}{4}$ and (C) $1^{2}$ is at least 1 away from 0 .

Since $-\frac{4}{5}=-0.8$ and -0.8 is closer to 0 than 0.9 is to 0 , then $-\frac{4}{5}$ is the closest value to zero.

ANsWer: (D)

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