Activity 25: Mental, Paper, Digital

March 19, 2008 through March 26, 2008

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ACTIVITY OVERVIEW

In this activity we will:

  • Practice simplifying and evaluating expressions
  • Decide appropriate methods to solve problems
  
For each of the problems in this activity, indicate your answer on the right and tell whether you used mental math, paper with pencil or calculator to solve the problem. Be ready to justify your choice with your teacher.
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5(20-8) +6 no alt text supplied
4*6-2
* means multiply

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24/8•2^4 no alt text supplied
Evaluate 36/x  when x=4 no alt text supplied
Evaluate 6x+2y  when x=9 and y=-3
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Evaluate (9+x)/(4y)  when x=7 and y=-2 no alt text supplied
Evaluate 3+2x³   when x=2 no alt text supplied
Evaluate 5(X +5)^2 -2 when x = 12 no alt text supplied
Remember that when you are evaluating expressions separated by a vinculum, you must place each expression in parentheses on the top or bottom of the vinculum.  
2(5)^3+ 35
 8(3+2)

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