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# ILearn Vocabulary

### Terms that could possibly be on the ILearn test.

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

Sum | The answer to an addition problem. |

Difference | The answer to a subtraction problem. |

Product | The answer to a multiplication problem. |

Quotient | The answer to a division problem. |

Dividend | The number that is to be divided in a division problem. |

Trapezoid | A quadrilateral with at least one pair of parallel sides. |

Perimeter | The distance around a shape. Add up all of the sides. |

Divisor | The number that divides the dividend. |

Acute Angle | An angle that is less that 90 degrees. |

Area | The space inside of a shape. Length times the width. |

Factor | A number that is multiplied to get a product. |

Obtuse Angle | An angle that is more than 90 degrees. |

Millimeter | A metric unit for measuring length or distance. 1 centimeter = 10 millimeters |

Multiple | The product of a number and a counting number is called a multiple of the number. Example: 2, 4, 6, 8, 10.... |

Right Angle | An angle that measures, exactly, 90 degrees. |

Inch | A customary unit used for measuring length or distance. |

Associative Property | The property that states that you can group factors in different ways and still get the same product. Example: 3 × (4 × 2) = (3 × 4) × 2 |

Mixed Number | An amount given as a whole number and a fraction. |

Numerator | Parts of a whole. The top number of a fraction. |

Denominator | Represents the whole. The bottom of a fraction. |

Congruent | Two figures or objects are congruent if they have the same shape and size. |

Parallelogram | A polygon that has TWO pairs of parallel lines. |

Rhombus | A quadrilateral with two pairs of parallel sides and four sides of equal length. |

Parallel Lines | Lines that will never touch. |

Ray | A part of a line; it has one endpoint and continues without end in one direction. |

Perpendicular lines | Lines that meet/cross to create a 90 degree angle. |

Intersecting lines | Lines that meet/cross to create an obtuse or acute angle. |

Commutative Property | The property that states that when the order of two factors is changed, the product is the same. Example: 4 × 5 = 5 × 4 |

Distributive Property | The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products. Example: 5 × (10 + 6) = (5 × 10) + (5 × 6) |

Improper Fraction | A fraction that has the numerator(top) bigger than the denominator(bottom). |

Inverse Operations | Operations that undo each other, such as addition and subtraction or multiplication and division. Example: 6 × 8 = 48 and 48 ÷ 6 = 8 |