Recurring DecimalsChange recurring decimals into their corresponding fractions and vica versa. 
Do not use a calculator. You can earn a trophy if you get at least 9 questions correct and you do this activity online.
This is Recurring Decimals level 2. You can also try:
Level 1
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 



Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions. 
More Activities: 

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician? Comment recorded on the 21 October 'Starter of the Day' page by Mr Trainor And His P7 Class(All Girls), Mercy Primary School, Belfast: "My Primary 7 class in Mercy Primary school, Belfast, look forward to your mental maths starters every morning. The variety of material is interesting and exciting and always engages the teacher and pupils. Keep them coming please." Comment recorded on the 5 April 'Starter of the Day' page by Mr Stoner, St George's College of Technology: "This resource has made a great deal of difference to the standard of starters for all of our lessons. Thank you for being so creative and imaginative." 


AnswersThere are answers to this exercise but they are available in this space to teachers, tutors and parents who have logged in to their Transum subscription on this computer. A Transum subscription unlocks the answers to the online exercises, quizzes and puzzles. It also provides the teacher with access to quality external links on each of the Transum Topic pages and the facility to add to the collection themselves. Subscribers can manage class lists, lesson plans and assessment data in the Class Admin application and have access to reports of the Transum Trophies earned by class members. If you would like to enjoy adfree access to the thousands of Transum resources, receive our monthly newsletter, unlock the printable worksheets and see our Maths Lesson Finishers then sign up for a subscription now: Subscribe 

Go MathsLearning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school. Maths MapAre you looking for something specific? An exercise to supplement the topic you are studying at school at the moment perhaps. Navigate using our Maths Map to find exercises, puzzles and Maths lesson starters grouped by topic. TeachersIf you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows: 

Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments. 
A decimal with a repeating digit (or set of digits) is called a recurring decimal.
For example \(0.77777777...\) is a recurring decimal and is called "nought point seven recurring"
\(9.247347347...\) is also a recurring decimal and is called "nine point two four seven recurring"
The period of a recurring decimal is the number of digits in the repeating section so for the second example above the period is three.
A more efficient way of writing out a recurring decimal is by only writing the repeating digit once but putting a dot over the first and last number in the repeating sequence. Another method is drawing a line over the repeating digit or digits.Here are some examples.
\(0.333333333... = 0.\dot 3 = 0.\overline 3\)
\(0.76531531531... = 0.76\dot 53\dot 1 = 0.76\overline{531}\)
A fraction can be converted to a decimal using long division; dividing the numerator by the denominator. If the decimal is recurring the repeating pattern of numbers will be spotted in the long division working. The following example shows the repeating patterns when converting \( \frac{7}{11} \) to a decimal:
There are two common methods for converting a recurring decimal to a fraction:
Let the recurring decimal be represented by \(x\)
$$x = 0.8888888...$$Multiply both sides by 10 (as there is one repeating digit)
$$10x = 8.8888888...$$Subtract the first equation from the second
$$9x = 8$$ $$x = \frac{8}{9}$$Let the recurring decimal be represented by \(x\)
$$x = 1.36363636...$$Multiply both sides by 100 (as there are two repeating digits)
$$100x = 136.36363636...$$Subtract the first equation from the second
$$99x = 135$$ $$x = \frac{135}{99}$$ $$x = \frac{15}{11}$$The method is the same but multiply both sides by 1000.
Example: convert \(0.8888888...\) to a fraction.
This method requires you to know that \(\frac19 = 0.1111111...\)
\(0.8888888...\) is exactly eight times \(0.1111111...\)
$$\therefore 0.8888888... = \frac{8}{9}$$Example: convert \(0.45454545\) to a fraction in its lowest terms.
This method requires you to know that \(\frac{1}{99} = 0.01010101...\)
\(0.45454545...\) is exactly forty five times \(0.01010101...\)
$$\therefore 0.45454545... = \frac{45}{99}$$ $$0.45454545... = \frac{5}{11}$$Example: convert \(0.\dot 61\dot 2\) to a fraction in its lowest terms.
This method requires you to know that \(\frac{1}{999} = 0.\dot 00\dot 1\)
\(0.\dot 61\dot 2\) is exactly six hundred and twelve times \(0.\dot 00\dot 1\)
$$\therefore 0.\dot 61\dot 2 = \frac{612}{999}$$ $$0.\dot 61\dot 2 = \frac{68}{111}$$Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you donâ€™t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
Close
Transum,
Wednesday, August 30, 2017
"Here's something to think about, discuss with your friends and share with your teacher:
What is the difference between \(0.\dot 9\) and one?
"