Online Self-Tests(A1)

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  1-2. Find the unknown values.

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  (1 point each)

  
  

  1	+	3	=
  2		4

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  3-4. Find the unknown values.

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  (1 point each)

  
  

  3	+	2	=
  4		8

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  5. Simplify.

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  (1 point each)

  
  

  14	=
  14

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  6. Find the unknown values.

  
  

  x	+	1	=	13
  2		8		8

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  (1 point)

  
  

  Answer:

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  7. Find the unknown values.

  
  

  1	+	x	=	5
  3		2		6

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  (1 point)

  
  

  Answer:

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  8. Find the unknown values.

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  (1 point)

  
  

  9	=		1
  4			4