Algebra
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    Simplify these expressions:  
  1) a+a+a  
  2) 2b+3b  
  3) a+b+a+b+c  
  4) ax6  
  5) 6c+2d+3c+3d  
 
    Evaluate 6a + 4b + 5c when:  
  6) a=1, b=1, c=1  
  7) a=2, b=1, c=3  
  8) a=3, b=3, c=4  
 
    Multiply out the brackets and simplify:  
  9) 3(a+4)  
  10) 4(a+2)+3(b+1)  
  11) 5(x-2)+4(y-2)  
  12) 3(2x-3y+z)+2(3x+5y)  
 
    Solve these equations:  
  13) a+5=10   a=  
  14) x+13=30   x=  
  15) 3x+5=14   x=  
  16) 4b-3=17   b=  
 
    Simplify and solve these equations:  
  17) 2(a+1)=6   a=  
  18) 4(3x-1)=20   x=  
  19) 4x+4(2x+3)=36   x=  
 
You scored
     
Created by James Dawson, John Ruskin School 2002
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