IndicesA self marking exercise on indices including evaluating expressions and solving equations. 
This is level 7: solving simple equations involving indices. You can earn a trophy if you get at least 12 out of the 15 questions answered correctly and you do this activity online.
This is Indices level 7. You can also try:
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. 
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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 

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Level 1  Evaluating simple positive indices without a calculator
Level 2  Evaluating positive indices with a calculator
Level 3  Evaluating negative and zero indices
Level 4  Evaluating indices expressed as fractions
Level 5  Mixed questions involving integer, negative and fractional indices
Level 6  Multiplying, dividing and raising to another power
Level 7  Solving simple equations involving indices
Game  Three levels of the Indices Pairs Game.
More on this topic including lesson Starters, visual aids and investigations.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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5^{2} = 5 x 5 = 25 5^{3} = 5 x 5 x 5 = 125 5^{4} = 5 x 5 x 5 x 5 = 625 
5^{1} = 5 5^{0} = 1 5^{1} = ^{1}⁄_{5} 5^{2} = ^{1}⁄_{5x5} = 0.04 
5^{a} × 5^{b} = 5^{a+b} 5^{a} ÷ 5^{b} = 5^{ab} (5^{a})^{b} = 5^{ab} 
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 don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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