Basic Math Examples

27.5

$27.5$

Step 1

Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there is

1

$1$ number to the right of the decimal point, place the decimal number over

10^{1}

$10^{1}$

(10)

$(10)$ . Next, add the whole number to the left of the decimal.

27 \frac{5}{10}

$27 \frac{5}{10}$

Step 2

Reduce the fractional part of the mixed number.

27 \frac{1}{2}

$27 \frac{1}{2}$

Step 3

Convert

27 \frac{1}{2}

$27 \frac{1}{2}$ to an improper fraction.

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Step 3.1

A mixed number is an addition of its whole and fractional parts.

27 + \frac{1}{2}

$27 + \frac{1}{2}$

Step 3.2

Add

27

$27$ and

\frac{1}{2}

$\frac{1}{2}$ .

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Step 3.2.1

To write

27

$27$ as a fraction with a common denominator, multiply by

\frac{2}{2}

$\frac{2}{2}$ .

27 \cdot \frac{2}{2} + \frac{1}{2}

$27 \cdot \frac{2}{2} + \frac{1}{2}$

Step 3.2.2

Combine

27

$27$ and

\frac{2}{2}

$\frac{2}{2}$ .

\frac{27 \cdot 2}{2} + \frac{1}{2}

$\frac{27 \cdot 2}{2} + \frac{1}{2}$

Step 3.2.3

Combine the numerators over the common denominator.

\frac{27 \cdot 2 + 1}{2}

$\frac{27 \cdot 2 + 1}{2}$

Step 3.2.4

Simplify the numerator.

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Step 3.2.4.1

Multiply

27

$27$ by

2

$2$ .

\frac{54 + 1}{2}

$\frac{54 + 1}{2}$

Step 3.2.4.2

Add

54

$54$ and

1

$1$ .

\frac{55}{2}

$\frac{55}{2}$

\frac{55}{2}

$\frac{55}{2}$

\frac{55}{2}

$\frac{55}{2}$

\frac{55}{2}

$\frac{55}{2}$