### General Information

**Subject Area:**Mathematics (B.E.S.T.)

**Grade:**3

**Strand:**Number Sense and Operations

**Date Adopted or Revised:**08/20

**Status:**State Board Approved

Compose and decompose four-digit numbers in multiple ways using thousands, hundreds, tens and ones. Demonstrate each composition or decomposition using objects, drawings and expressions or equations.

The number 5,783 can be expressed as 5 thousands + 7 hundreds + 8 tens + 3 ones or as 56 hundreds + 183 ones.

Course Number1111 |
Course Title222 |

5012050: | Grade Three Mathematics (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current)) |

7712040: | Access Mathematics Grade 3 (Specifically in versions: 2014 - 2015, 2015 - 2018, 2018 - 2022, 2022 and beyond (current)) |

5012055: | Grade 3 Accelerated Mathematics (Specifically in versions: 2019 - 2022, 2022 and beyond (current)) |

5012015: | Foundational Skills in Mathematics 3-5 (Specifically in versions: 2019 - 2022, 2022 and beyond (current)) |

Access Point Number |
Access Point Title |

MA.3.NSO.1.AP.2 | Compose and decompose three-digit numbers using hundreds, tens and ones. Demonstrate each composition or decomposition with objects, drawings, expressions or equations. |

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Description |

What Decade is It? - Rounding Whole Numbers to the Nearest 10 | In this lesson, students will tap prior knowledge of place value and dimes to round numbers to the nearest 10. Students will use number lines with tick marks in increments of 10 to visualize the closer decade and then progress to using the place value of numerals to round to the tens place. Pairs of students will participate in a rounding activity using a number line. |

Jumping Beans: Adding with Open Number Lines | Students will use the open number line as a strategy to add within 1,000. The lesson begins with a formative assessment that evaluates students' strategies for efficiently solving addition sentences within 1,000. In order for students to have practice reinforcing the skill, students will complete the guided practice with open number lines, as well as playing the game, Jumping Beans. To conclude the lesson, students will evaluate a solution to an open number line problem. |

Decoding Decomposing {Adding two 3-digit Numbers} | Students will add 3-digit numbers by decomposing them by place value. It is a useful lesson to reinforce place value concepts when adding. |

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Description |

Regrouping Numbers: 4,500 = 3 thousands + ? hundreds | In this tutorial, you will look at regrouping a number by different place values. |

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Description |

Regrouping Numbers: 4,500 = 3 thousands + ? hundreds: | In this tutorial, you will look at regrouping a number by different place values. |