Name________________________

 

SUBTRACTING DECIMALS #12--KEY

 

 

Directions:  Find the difference of the following decimals by rewriting the problem with your decimal points lined up.  If necessary, use zeroes to hold your place values.

 

Examples:         2.35 - 0.7         becomes           2.35                 and       3.054 - 2.1       becomes           3.054  

                                                                    -   0.70                                                                         -   2.100

                                                                        1.65                                                                             0.954

                                   

 

                       

          Original Problem        Rewritten Problem             Original Problem                      Rewritten Problem

 

1)         5.12 - 0.3                                 5.12                                   2)      3.602 - 1.01                          3.602

                                                       -    0.30                                                                                    -    1.010

                                                            4.82                                                                                         2.592

 

 

3)         8.45 - 0.8                                 8.45                                   4)      4.222 - 3.7                            4.222

                                                       -    0.80                                                                                    -    3.700

7.65                                                                                         0.522

 

 

5)         7.333- 4.6                                7.333                                 6)      6.408 - 0.01                          6.408

                                                       -    4.600                                                                                  -    0.010

2.733                                                                                       6.398

 

 

7)         5.37 - 0.4                                 5.37                                   8)      0.711 -0.222                         0.711

                                                       -    0.40                                                                                    -    0.222

4.97                                                                                         0.489

 

 

9)         3.3 - 2.8                                   3.2                                     10)    4.064 - 0.1                            4.064

                                                       -    2.8                                                                                      -    0.100

0.5                                                                                           3.964

 

 

11)       3.111 - 1.99                             3.111                                 12)    6.523 - 5.5                            6.523

                                                       -    1.990                                                                                  -    5.500

                                                            1.121                                                                                       1.023