Make an ExpressionA challenge to use the available digits to form an expression with a value equal to the given total 
This is level 1: use all of the digits 1 to 4 to form expressions with totals 1  12. You will be awarded a trophy if you get at least 9 correct and you do this activity online.
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  Use all of the digits 1 to 4 to form expressions with totals 1  12.
Level 2  Use all of the digits 1 to 4 to form expressions with totals 13  24.
Level 3  Use all of the digits 1 to 4 to form expressions with totals 25  36.
Level 4  Use all of the digits 1 to 4 to form expressions with totals 37  48.
Level 5  Mixed Questions
Advanced  For this advanced challenge you cannot concatenate digits (you can't put 2 and 3 together to make 23) but you can use exponentials and factorials.
The 12 Ways of Christmas  A special festive variation of the Make an Expression challenge.
CentExpression  Find an expression for 100 using the digits 1 to 9
One Digit Only  Find expressions for target numbers using repeated digits.
More on this topic including lesson Starters, visual aids and investigations.
The idea is to make correct mathematical expressions using all of the given digits to equal the target numbers. Click the blue buttons in the order you wish to see their values in the expressions. Press the C button to clear the expression and start again.
Here is an example of a correct expression for the target 11.
This Numberphile video of the four 4s problem might give you some ideas!
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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