Online Self-Tests(B36)

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  1. A pen weighs about 80 milligrams when first bought. After 6 months of using it, it now weighs 35 milligrams. What is the percentage of the weight decreased?

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  (1 point)

  
  

  Answer:

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  %

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  2. Find the value of x.

  
  

  x	–	1	=	1
  8		2		8

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  (1 point)

  
  
  

  Answer:

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  3. A pie is already 25% eaten. If 2/3 of the remaining pie is eaten, what is the percentage of pie left over from the new pie? Round to the nearest tenths.

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  (1 point)

  
  
  
  

  Answer:

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  4. Find the value of x.

  
  

  3	+	x	=	9
  5		10		10

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  (1 point)

  
  

  Answer:

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  5. Solve the equation.

  
  

  x

  –

  5

  =

  3

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  (1 point)

  
  

  Answer:

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  6. If x÷ 3 = 7 and y = 3, find the value of x÷ y.

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  (1 point)

  
  

  Answer:

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