## Addition and Subtraction Strategies to 20

Lesson 1 - Doubles | I will add doubles facts to 20. |

Lesson 2 - Doubles Plus 1 | I will add doubles plus one. |

Lesson 3 - Make 10 to Add | I will make 10 to find sums. |

Lesson 4 - Problem Solving Strategy: Write a Number Sentence | I will write number sentences to solve problems. |

Lesson 5 - Add Three Numbers | I will add three numbers. |

Lesson 6 - Use Doubles to Subtract | I will use doubles facts to subtract. |

Lesson 7 - Relate Addition and Subtraction | I will use related addition and subtraction facts. |

Lesson 8 - Problem Solving Investigation | I will choose a strategy to solve a problem. |

Lesson 9 - Fact Families | I will make fact families. |

Lesson 10 - Ways to Name Numbers | I will make a number in different ways. |

Study Guide and Review | |