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ADDITION WORKSHEET

Demonstrate how to solve the following addition problems using models.

 1.     3 + 4                         2.     2 + 6


 3.     -3 + (-4)                    4.     -2 + (-6)


 5.     3 + (-4)                     6.     -3 + 4


 Rules?

Both numbers are the same sign:  
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Numbers are different signs: ______________________________________________________________________________________________________

Solve the following addition problems by applying the above rules:


 1.     -18.6 + 25.3                    2.     14.4 + 19.7


 3.     -25.7 + (-18.3)               4.     28.2 + (-17.5)


 5.     |-16 + 12|                    6.     |43.7 +  (-45.2)|


 Thought question:   Will |a + b| always be equal to
              |b + a|  ?