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P. 10

Adding and Subtracting


                                               within 1,000

























                                glue
                                                                                                       glue
                                                                    glue





                    856                                  438                                527



                  +  l 7 l                            + 366                              – 404


















                                                                                   780   – 639






                                                       glue
           CD-104648




           •
           Carson-Dellosa






           ©                                                                  Adding and Subtracting within 1,000  19
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