Express 711 as a repeating decimal. Mark the cycle of repeating digits with a bar.

Note: You will find the option to add a bar above text in the Geometry ( ∠ ) keyboard.

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1 answer

To express \( \frac{711}{999} \) as a repeating decimal, we first divide 711 by 999.

  1. Perform the Long Division:

    • 711 divided by 999 is 0 as 711 is less than 999.

    • We find \( 7110 \div 999 \). 999 goes into 7110 about 7 times (since \( 999 \times 7 = 6993 \)).

    • Subtract \( 6993 \) from \( 7110 \): \[ 7110 - 6993 = 117 \]

    • Bring down a 0 to make it \( 1170 \).

    • Next, \( 1170 \div 999 \) goes about 1 time (since \( 999 \times 1 = 999 \)).

    • Subtract \( 999 \) from \( 1170 \): \[ 1170 - 999 = 171 \]

    • Bring down another 0 to make it \( 1710 \).

    • Now, \( 1710 \div 999 \) goes about 1 time (again, \( 999 \times 1 = 999 \)).

    • Subtract \( 999 \) from \( 1710 \): \[ 1710 - 999 = 711 \]

    • Bring down a 0 to make it \( 7110 \).

At this point, we can see that we have cycled back to \( 7110 \), indicating that the digits we obtained will repeat.

  1. Express the Result:

    The decimal part of our result is \( 0.7111711... \).

Thus, we can write it as:

\[ 0.\overline{711} \]

Where the bar indicates that "711" is the repeating part of the decimal.

So the final answer is:

\[ 0.\overline{711} \]