5-1     Models of Addition



Add.    No calculators.

1.    -4 + 6  = ______                              2.    -9 + -4 = ______                         3.    6 + -13 = ______
 

4.    -5 + -8 = ______                              5.    -4.2 + -3.1 = ______                   6.    -3.4 + 7 = ______
 

7.    -2.34 + 6 = ______                           8.    -3.3 + -4.54 = ______                9.    -10 + 5.43 = ______
 

10.    -1.23 + 5.2 = ______                    11.    -9.6 + 4.89 = ______               12.    -4.4 + -7 = ______
 

13.    -8.8 + -5.33 = ______                   14.    -.5 + 6.4 = ______                   15.   -5.65 + -3.3 = ______
 
 

Write an equation for each situation.

16.    p people went into the store and c people came out.  There are now
        30 people in the store                                                                                              ________________
 

17.    I ran m miles and walked w miles.  In all, I went 8 miles.                                         ________________
 

18.    I bought a pounds of apples,  b pounds of bananas, and c pounds of cantoloupe.
         In all, I bouthe 4 pounds of fruit.                                                                             ________________
 

19.    A stick was 3 meters long.  My son broke off m meters.
         The stick is now y meters long.                                                                                ________________
 

20.    A book was $12.80 before tax.  I paid t dollars in tax.
         The total bill for the book was $13.44                                                                    ________________
 

21.    I jumped from a plane that was 8000 miles in the air.  After 10 seconds,
         I had fallen f feet.  I was now n feet above the ground.                                           ________________
 

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