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After how many decimal places the decimal expansion of 51/150 will terminate

Answer»

The decimal expansion  \frac{51}{150}  will terminate after 2 decimal places.

Step-by-step EXPLANATION:

To find : After how many decimal places the decimal expansion of 51/150 will terminate ?

SOLUTION :

The decimal expansion is terminating when the DENOMINATOR is in the form of 2^n\times 5^m otherwise it is non-terminating.

Factor the denominator,

\dfrac{51}{150}=\dfrac{51}{2\times3\times 5 \times5}

\dfrac{51}{150}=\dfrac{17}{2\times 5^2}

The denominator is in the required form so it is terminating.

\dfrac{51}{150}=\dfrac{17\times 2}{2^2\times 5^2}

\dfrac{51}{150}=\dfrac{34}{10^2}

\dfrac{51}{150}=0.34

The decimal expansion  \frac{51}{150}  will terminate after 2 decimal places.

#Learn more

The decimal expansion of the rational number 33/22.5 will TERMINATES after How many places of decimal

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