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Online Self-Tests(A28)


  • 1. Determine the unknown value that makes the equation true.

    (1 point)

    28+

    =

    		47


  • 2. Determine the unknown value that makes the equation true.

    (1 point)

    23+

    =

    		31


  • 3. Determine the unknown value that makes the equation true.

    (1 point)

    		+11

    =

    		18


  • 4. Determine the unknown value that makes the equation true.

    (1 point)

    		+19

    =

    		53


  • 5. Determine the unknown value that makes the equation true.

    (1 point)

    19+

    =

    		54


  • 6. Determine the unknown value that makes the equation true.

    (1 point)

    		+27

    =

    		35