Online Self-Tests(A18)

• 
  

  1-2. Find the answer to the equation.

  ---

  (1 point)

  
  

  3	+	(	1	+	1	)	=
  10			10		2

• 
  

  3-4. Find the answer to the equation.

  ---

  (1 point each)

  
  

  9	–	(	1	+	1	)	=
  10			2		10

• 
  

  5-6. Find the answer to the equation.

  ---

  (1 point each)

  
  

  5	+	(	1	–	1	)	=
  10			2		10

• 
  

  7. Find the unknown value that makes the equation true.

  ---

  (1 point)

  	+	2	=	8
  5		10		10

• 
  

  8. Find the unknown value that makes the equation true.

  ---

  (1 point)

  1	+		=	5
  10		5		10

• 
  

  9-10. Find the answer to the equation.

  ---

  (1 point each)

  
  

  1	+	2	=
  2		7