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# Math G4 U4 L2

### Math 4th Grade Unit 4 Lesson 2

Question | Answer |
---|---|

Factor | the numbers multiplied together to find a product. Example 3 x 6 = 18 |

Product | The answer to a multiplication problem. |

Commutative Property of Multiplication | Factors can be multiplied in any order and the product remains the same. |

Identity Property of Multiplication | The product of any number is that number. |

Zero Property of Multiplication | The product of any number and zero is zero. |

Distributive Property of Multiplication | Breaking apart problems into two simpler problems. (3 x 21) = (3 x 20) + (3 x 1) |

Array | a way of displaying objects in rows and columns. |

Area Model | The number of square units needed to cover the region. |

Multiplication | A mathematical operation where a number is added to itself a number of times. |

Multiple | The product of any two whole numbers. |

Row | Items in an array arranged in a horizontal line. |

Column | Items in an array arranged in a vertical line. |

Dimensions | Refers to the length, width, and height of a shape. |

Fact Family | A group of related facts using the same set of numbers. Example: 3 x 5 = 15; 5 x 3 = 15; 15 / 3 = 5; 15 / 5 = 3 |

Compatible Number | Numbers that are easy to compute mentally. |

Estimate | An approximate rather than an exact answer. |

Round | To estimate a number to the nearest ten, hundred, or thousands. |

Approximate | To estimate a number amount, or total, often rounding it off to the nearest 10 or 100. |

Created by:
twaller