Basic Math Examples

- 1.28

$- 1.28$

Step 1

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

2

$2$ numbers to the right of the decimal point, place the decimal number over

10^{2}

$10^{2}$

(100)

$(100)$ . Next, add the whole number to the left of the decimal.

- 1 \frac{28}{100}

$- 1 \frac{28}{100}$

Step 2

Reduce the fractional part of the mixed number.

- 1 \frac{7}{25}

$- 1 \frac{7}{25}$

Step 3

Convert

1 \frac{7}{25}

$1 \frac{7}{25}$ to an improper fraction.

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Step 3.1

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

- (1 + \frac{7}{25})

$- (1 + \frac{7}{25})$

Step 3.2

Add

1

$1$ and

\frac{7}{25}

$\frac{7}{25}$ .

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Step 3.2.1

Write

1

$1$ as a fraction with a common denominator.

- (\frac{25}{25} + \frac{7}{25})

$- (\frac{25}{25} + \frac{7}{25})$

Step 3.2.2

Combine the numerators over the common denominator.

- \frac{25 + 7}{25}

$- \frac{25 + 7}{25}$

Step 3.2.3

Add

25

$25$ and

7

$7$ .

- \frac{32}{25}

$- \frac{32}{25}$

- \frac{32}{25}

$- \frac{32}{25}$

- \frac{32}{25}

$- \frac{32}{25}$