18/8 as a Decimal

18/8 as a decimal is 2.25, the same as 9/4 or 225%.

Result

Answer

\frac{18}{8} = \textcolor{#0b5c56}{2.25}

18/8 as a decimal is 2.25.

  • Percent: 225%

2 wholes + 1 of 4 equal parts

Step-by-step solution

The problem

\frac{18}{8}

  1. Divide 18 by 8 (long division). Write down how many times 8 goes in, carry the remainder, add a 0 and divide again. The remainder is 0, so the decimal ends here.

    StepDivideDigitRemainderWorking
    Whole part18 ÷ 8228 × 2 = 16, 18 − 16 = 2
    Decimal place 120 ÷ 8248 × 2 = 16, 20 − 16 = 4
    Decimal place 240 ÷ 8508 × 5 = 40, 40 − 40 = 0

  2. Read off the decimal. The digits are read from the Digit column.

    = 18 \div 8 = \textcolor{#0b5c56}{2.25}

  3. Check with a shortcut. The denominator 4 can be made 100 by multiplying by 25, so the decimal ends after 2 places.

    \frac{9}{4} = \frac{9 \times 25}{4 \times 25} = \frac{225}{100} = 2.25

All the working together

\begin{aligned} &\frac{18}{8} \\[8pt] &= 18 \div 8 && \textcolor{#5b6660}{\textsf{divide}} \\[8pt] &= \textcolor{#0b5c56}{2.25}\end{aligned}

18/8 in other forms

Decimal2.25
Percent225%
Simplest form9/4
Mixed number2 1/4
Equivalent fractions9/4, 27/12, 36/16, 45/20
The other way2.25 as a fraction

Why it ends

In lowest terms the denominator is 4 = 22. Its only prime factors are 2 and 5 (the factors of 10), so the division comes out exactly and the decimal ends.

Fractions over 8 as decimals

FractionDecimalPercent
1/80.12512.5%
2/80.2525%
3/80.37537.5%
4/80.550%
5/80.62562.5%
6/80.7575%
7/80.87587.5%
9/81.125112.5%
10/81.25125%
11/81.375137.5%
12/81.5150%
13/81.625162.5%
14/81.75175%
15/81.875187.5%
17/82.125212.5%
18/82.25225%
19/82.375237.5%
20/82.5250%
21/82.625262.5%
22/82.75275%
23/82.875287.5%

Frequently asked questions

What is 18/8 as a decimal?

18/8 as a decimal is 2.25. Divide 18 by 8 to get it.

What is 18/8 as a percent?

18/8 is 225%: multiply the decimal by 100 (move the decimal point two places to the right).

Is 18/8 a terminating or a repeating decimal?

Terminating – the digits stop. In lowest terms the denominator is 4 = 22. Its only prime factors are 2 and 5 (the factors of 10), so the division comes out exactly and the decimal ends.

Is 18/8 the same as 9/4?

Yes. 18/8 simplifies to 9/4 (divide the top and bottom by 2), so both are 2.25.

More fractions as decimals

Any other fraction: use the Fraction to Decimal Calculator, or see every fraction to sixteenths on the printable fraction chart.