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Three numbers are placed between −1 and $\frac{1}{2}$ so that all five numbers are equally spaced. What is the middle number?

Class 7Rational Numbers Between Two NumbersRational Numbers

A $- \frac{1}{8}$
B $- \frac{1}{4}$
C $- \frac{1}{2}$
D0

Step-by-Step Solution

The gap is

\frac{3}{2}

, split into 4 equal steps of

\frac{3}{8} : - 1, - \frac{5}{8}, - \frac{1}{4}, \frac{1}{8}, \frac{1}{2}

. The middle number is

- \frac{1}{4}

— also the halfway point of −1 and

\frac{1}{2}

.

Answer: B)

- \frac{1}{4}

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