Online Self-Tests(A3)

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  1-2. Find the unknown values.

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  (1 point each)

  
  

  2	+	2	=
  3		7

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  3-4. Find the unknown values.

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  (1 point each)

  
  

  1	+	4	=
  3		7

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  5. Simplify.

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  (1 point each)

  
  

  20	=
  10

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  6. Find the unknown values.

  
  

  x	+	1	=	7
  4		3		12

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  (1 point)

  
  

  Answer:

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• 
  

  7. Find the unknown values.

  
  

  1	+	x	=	10
  3		7		21

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  (1 point)

  
  

  Answer:

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• 
  

  8. Find the unknown values.

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  (1 point)

  
  

  14	=		1
  4			2