SubstitutionSubstitute the given values into the algebraic expressions in this self marking quiz. 
This is level 1: . Here are some mathematical expressions.
Can you evaluate them if s = 2, b = 6, t = 2 and n = 9
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. 



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Level 1  Simple addition and subtraction  positive integers
Level 2  Addition, subtraction and multiplication  positive integers
Level 3  Indices  positive integers
Level 4  Brackets  positive integers
Level 5  Mixed expressions  positive integers
Level 6  Mixed expressions  negative integers
Level 7  Mixed expressions  positive and negative decimals