What is 15 42/40 as an improper fraction?

The mixed number 15 42/40 written as an improper fraction is 642/40

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Convert 15 42/40 as an improper fraction

To turn the mixed number 15 42/40 into an improper fraction, use these simple steps:

First, multiply the whole number by the denominator of the fractional part: 15 × 40 = 600.

After that, add the result to the numerator of the fractional part: 600 + 42 = 642.

Next, Write the sum of the previous step on the original denominator: 642/40.

15
42/40
=
15 × 40 + 42/40
=
642/40

This means that 15 42/40, as an improper fraction, equals 642/40.

See also: 15 42/40 as a decimal

Examples of decimal to fraction calculations