What is 77/9 as a Decimal?
77/9 = 8.(5)
Step by step
- Simplify: 77/9 is already in simplest form
- Divide the numerator by the denominator: 77 ÷ 9 = 8.55555556
- The digits in brackets repeat forever: 8.(5)
How the answer is worked out
A fraction is a division: 77/9 means 77 divided by 9, and doing that division gives 8.(5). The division never ends, because the simplified denominator has a prime factor other than 2 or 5. The digits in brackets repeat forever.
As a percentage, 77/9 is 855.5556%. It is an improper fraction: as a mixed number it is 8 5/9.
Why calculate this?
Decimals are easier to compare and to use in calculators and spreadsheets than fractions.
- Cooking: a recipe that asks for 77/9 of a cup needs 8.556 cups, about 2,053.3333 millilitres.
- Measuring: 77/9 of an inch is 8.5556 inches, or 217.31 millimetres.
- Money: 77/9 of a dollar is about $8.56, and 77/9 of $100 is $855.56.
A quicker way
Long division: 9 goes into 77 8 times, remainder 5.
Bring down a zero: 50 ÷ 9 = 5, remainder 5.
The remainder 5 has come up before, so the digits from that point repeat forever: 8.(5).
Check the answer
Work backwards: 8.555556 × 9 = 77, which is 77 once rounding is allowed for.
Rounding
Rounded to a whole number the decimal is 9, to one decimal place 8.6 and to two decimal places 8.56. Round only at the end: rounding halfway through a calculation can change the last digit.
The formula explained
decimal = numerator ÷ denominator. The numerator is the top number and counts the pieces; the denominator is the bottom number and says how many equal pieces make a whole. Dividing the top by the bottom gives the size of the fraction as a decimal.
Another worked example: 15/24 as a decimal
- Simplify: 15/24 = 5/8 (divide by 3)
- Divide the numerator by the denominator: 15 ÷ 24 = 0.625
Equivalent fractions
77/9 has the same value as 154/18, 231/27 and 770/90: multiplying the top and bottom by the same number never changes a fraction. All of them give 8.(5) when divided out.
Comparing with nearby fractions
77/9 (8.5556) is bigger than 77/10 (7.7) and smaller than 78/9 (8.6667). A bigger denominator means smaller pieces, so with the same numerator the fraction gets smaller.
The reciprocal
Flipping the fraction gives 9/77 = 0.(116883). A number multiplied by its reciprocal is always 1: 77/9 × 9/77 = 1.
In time and money
77/9 of an hour is 513.33 minutes, and 77/9 of a day is 205.33 hours.
In a pie chart
A slice worth 77/9 of the whole takes up 3,080 degrees of the circle, because a full turn is 360 degrees. That is the angle to draw when you make the chart by hand with a protractor.
Other ways to ask this
The same calculation is often asked in other words. All of these have the answer above:
- 77/9 in decimal form
- 77 divided by 9
- Convert 77 over 9 to a decimal
- What is 77 ÷ 9?
- 77 out of 9 as a decimal number
Terms used on this page
- Numerator: the top number of a fraction.
- Denominator: the bottom number, the number of equal parts in a whole.
- Terminating decimal: a decimal that ends, such as 0.25.
- Repeating decimal: a decimal whose digits repeat forever, such as 0.333….
The answer in other forms
| Decimal | 8.(5) |
|---|---|
| Percentage | 855.5556% |
| Simplified | 77/9 |
| Type | improper fraction |
Related results
| 1/9 as a decimal | 1/9 = 0.(1) |
| 2/9 as a decimal | 2/9 = 0.(2) |
| 3/9 as a decimal | 3/9 = 0.(3) |
| 78/9 as a decimal | 78/9 = 8.(6) |
| 76/9 as a decimal | 76/9 = 8.(4) |
The other way round: 9/77 as a decimal
Doing it in a spreadsheet
In Excel, Google Sheets or Numbers type =77/9 into any cell. Replace the numbers with cell references (for example A1 and B1) to reuse the formula for a whole column.
Common mistakes
Dividing the denominator by the numerator flips the fraction. A bar over (or brackets around) digits means they repeat forever.
Practice examples
| 15/24 as a decimal | Show answer15/24 = 0.625 |
| 49/96 as a decimal | Show answer49/96 = 0.51041(6) |
| 19/37 as a decimal | Show answer19/37 = 0.(513) |
| 46/75 as a decimal | Show answer46/75 = 0.61(3) |
| 38/58 as a decimal | Show answer38/58 = 0.(6551724137931034482758620689) |
| 85/50 as a decimal | Show answer85/50 = 1.7 |
| 24/26 as a decimal | Show answer24/26 = 0.(923076) |
| 65/31 as a decimal | Show answer65/31 = 2.(096774193548387) |
| 13/28 as a decimal | Show answer13/28 = 0.46(428571) |
| 87/67 as a decimal | Show answer87/67 = 1.(298507462686567164179104477611940) |
How this answer was calculated
The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.
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Questions
What is 77/9 as a Decimal?
77/9 as a decimal is 8.(5). Long-division steps and simplified fraction.
What is 77/9 as a percentage?
855.5556%. Multiply the decimal 8.555556 by 100.
What is 77/9 in simplest form?
77/9 is already in simplest form: 77 and 9 have no common factor other than 1.
Is 77/9 a terminating or a repeating decimal?
Repeating: 8.(5). The digits in brackets go on forever.
What is 77/9 rounded to two decimal places?
8.56. Rounded to three places it is 8.556.
What is 77/9 of 100?
855.5556. Multiply 100 by 77 and divide by 9, or multiply 100 by the decimal 8.555556.
What is 77/9 as a ratio?
77:9. A ratio compares the part with the whole in the same way the fraction does.