# Demonstrate how addition and subtraction are inverse operations

1. | 36 + 12 = 48 So what else is true? | |

2. | Complem. add/subtract: 136+419=555 | |

3. | Complem. add/subtract: 216+84=300 | |

4. | Complem. add/subtract: 112+32=144 | |

5. | Complem. add/subtract: 125+14=139 | |

6. | Complem. add/subtract: 105+24=129 | |

7. | Complem. add/subtract: 210+14=224 | |

8. | Comp. pairs add/subtract: 678+156=834 | |

9. | Comp. pairs add/subtract: 246+357=603 | |

10. | Comp. pairs add/subtract: 545+328=873 | |

11. | Comp. pairs add/subtract: 488+323=811 | |

12. | Comp. pairs add/subtract: 493+257=750 | |

13. | Complementary pairs: 347+454=801 | |

14. | Complementary pairs: 482+395=877 | |

15. | Complementary pairs: 278+596=874 | |

16. | Complementary pairs: 532+209=741 | |

17. | Complementary pairs: 627+277=904 | |

18. | 12 + 7 = 19 - so what else is true? | |

19. | Complem. add/subtract: 652-547=105 | |

20. | Complem. add/subtract: 845-69=776 | |

21. | Complem. add/subtract: 492-116=376 | |

22. | Complem. add/subtract: 831-88=743 | |

23. | Complem. add/subtract: 634-97=537 | |

24. | Complem. add/subtract: 263-84=179 | |

25. | Complem. add/subtract: 751-47=704 | |

26. | Complem. add/subtract: 397-59=338 |