Basic Math Examples

20.5

$20.5$

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.

20 \frac{5}{10}

$20 \frac{5}{10}$

Step 2

Reduce the fractional part of the mixed number.

20 \frac{1}{2}

$20 \frac{1}{2}$

Step 3

Convert

20 \frac{1}{2}

$20 \frac{1}{2}$ to an improper fraction.

Tap for more steps...

Step 3.1

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

20 + \frac{1}{2}

$20 + \frac{1}{2}$

Step 3.2

Add

20

$20$ and

\frac{1}{2}

$\frac{1}{2}$ .

Tap for more steps...

Step 3.2.1

To write

20

$20$ as a fraction with a common denominator, multiply by

\frac{2}{2}

$\frac{2}{2}$ .

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

$20 \cdot \frac{2}{2} + \frac{1}{2}$

Step 3.2.2

Combine

20

$20$ and

\frac{2}{2}

$\frac{2}{2}$ .

\frac{20 \cdot 2}{2} + \frac{1}{2}

$\frac{20 \cdot 2}{2} + \frac{1}{2}$

Step 3.2.3

Combine the numerators over the common denominator.

\frac{20 \cdot 2 + 1}{2}

$\frac{20 \cdot 2 + 1}{2}$

Step 3.2.4

Simplify the numerator.

Tap for more steps...

Step 3.2.4.1

Multiply

20

$20$ by

2

$2$ .

\frac{40 + 1}{2}

$\frac{40 + 1}{2}$

Step 3.2.4.2

Add

40

$40$ and

1

$1$ .

\frac{41}{2}

$\frac{41}{2}$

\frac{41}{2}

$\frac{41}{2}$

\frac{41}{2}

$\frac{41}{2}$

\frac{41}{2}

$\frac{41}{2}$