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# 4th Grade Tier 3

### Number and Operations in Base Ten

Term | Definition |
---|---|

place value | The value of where the digit is in the number. |

greater than | is used to compare two numbers when the first number is larger than the second number. Represented by symbol >. |

less than | is a symbol used to compare two numbers, with the lesser number given first 2<4 |

equal to | A term that indicates the same amount, measure or quantity as another amount, measure or quantity. |

comparisons/compare | Examine the difference between numbers, to decide if one number is greater than, or equal to another number. Examine how shapes are alike or different. |

round | making a number simpler but keeping its value close to what it was. |

inequality | that two values are not equal. |

expression | Numbers, symbols and operators (such as + and ×) grouped together that show the value of something. |

add | To bring two or more numbers (or things) together to make a new total. |

addend | A number used in the mathematical operation of addition |

sum | The result of addition |

subtract | To take one number away from another. |

difference | The result of subtracting one number from another |

equation | says that two things are equal. It will have an equals sign "=" like this: 7 + 2 = 10 − 1 |

rectangular arrays | An arrangement of objects into rows and columns that form a rectangle. All rows and columns must be filled . Each row has the same number of objects and each column has the same number of objects. |

area model | A model for multiplication problems, in which the length and width of a rectangle represents the factors. |

multiply | The basic idea is repeated addition to find a product. |

divide | split into equal parts or groups. It is "fair sharing". |

factor | numbers you can multiply together to get another number. |

product | The answer when two or more numbers are multiplied together |

quotient | The answer after you divide one number by another dividend ÷ divisor = ? |

reasonableness | Within likely or sensible boundaries. |