\[315\%\]

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Examples

315\%

means 315 out of 100.

\frac{315}{100}

Find the Greatest Common Factor (GCF) of

315,100

Method 1: By Listing Factors

List the factors of each number.

Factors of 315

: 1, 3, 5 ... 63, 105, 315

Factors of 100

: 1, 2, 4, 5, 10, 20, 25, 50, 100

Find the largest number that is shared by all rows above. This is the GCF.

GCF =

5

Method 2: By Prime Factors

List the prime factors of each number.

Prime Factors of 315

: 3, 3, 5, 7

Prime Factors of 100

: 2, 2, 5, 5

Find the intersection of these primes.

5

The intersection contains only one number. Therefore, this is the GCF.

GCF =

5

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5

Divide both the numerator and the denominator by the GCF.

\frac{315\div 5}{100\div 5}

Simplify.

\frac{63}{20}

Done

Decimal Form: 3.15

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