How do I create a Simple Formula question?
You can create a quiz question with a formula in it.
Note: If you need help adding a mathematical formula in the Rich Content Editor, please see the Math Editor lesson.
Create a New Question
Edit Question Name and Point Value
Type a name in the name field  and the point value in the points field . Type the question prompt text and formula with variables in brackets in the Rich Content Editor . You can include video, images, math equations, or flash activities. Click the Need help? link  for more advanced options.
Note: If you need help adding a mathematical formula in the Rich Content Editor, please see the Math Editor lesson. You cannot use the letter "e" as a variable. It is a reserved mathematical constant.
Set Variable Definitions
After you have finished typing the formula in the Rich Content Editor, parameters to define the formula will appear. Set the variable definitions for the formula. Specify the minimum and maximum numbers for variable X . Select decimal places in the drop-down menu , and click the Recompute button  to verify that Canvas will insert a number into the formula that is within the variable definition.
Set Formula Definitions
Type the formula definition in the formula field . Make sure the formula does not contain any brackets or equal signs. Select the Decimal Places drop-down menu  to set the number of decimal places you want used for the result. Select the Save button to save your formula .
Set Possible Number of Solutions
In the Offer field, specify the number of possible solutions you want Canvas to generate .
In the error margin of field, enter the margin of error for the student's answer . Responses are based on relative error in addition to absolute error. Margins of error can be created as a percentage or as a point value (up to three decimal places).
Click the Generate button to view final answer .
You can provide feedback for the question by clicking a feedback bubble and entering text. The bubbles are color-coded to correspond with the type of answer the student provides. Green is for correct answer feedback , red is for incorrect answer feedback , and blue is for general question feedback .
Student View for Formula Question
This is what students see when they encounter a Formula question in a quiz.
Student View for Formula Question feedback
If you allow students to see the correct answers, they will see the correct responses listed after their answer . A green flag  indicates the correct answer. A red flag indicates the student's incorrect answer.