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# Delk Grade 5 Vocab M

### Vocabulary

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

Whole Numbers | The numbers numerical numbers starting with 0, 1...... |

Sum | The answer in an addition equation |

Estimate | Find about how many or about how much. A reasonable guess about a measurement or answer |

Difference | The distance between 2 numbers on a number line, the answer to a subtraction equation |

Factor | One of two or more numbers multiplied together to make a product |

Quotient | The answer in a division equation |

Divisor | The number that divided into another number |

Dividend | The number being divided |

Regrouping | An equal exchange from one place to the next |

Numerator | The number above the line in a fraction; the number that tells how many equal parts are described by the fraction |

Denominator | The number below the line in a fraction; it tells the number of equal parts into which a whole is divided. |

Mixed Number | A number with an integer part and fraction part |

Improper Fraction | A fraction with a value greater than 1 that is not written as a mixed number |

Equivalent Fraction | Fractions that represent an equal amount |

Greatest Common (GCF) | The largest common number that divides evenly into two or more numbers |

Simplest Form | A fraction whose numerator and denominator have no common factor greater than one |

Least Common Denominator or Least Common Multiple | The smallest common multiple of the denominators of two or more fractions |

Divisible | Capable of being divided by another number without a remainder |

Factors | A number that is multiplied by another number to find a product |

Multiple | The product of that number and any other whole number |

Prime Number | A number with exactly two factors |

Composite Number | A number with more than two factors |

Divisiblitily Rules | Rules that determine when a number is divisible by another number |

Array | An arrangement of objects, picutres or numbers in colums and rows. |

Even | Any number ending in 0,2,4,6, or 8; divisible by two |

Odd | Any number ending in 1,3,5,7, or 9 |

Product | The answer in multiplication |

Sum | The answer in addition |

Difference | The answer in subtraction |

Quotient | The answer in a divison equation |

Parentheses | A pair of grouping symbols used to enclose sections of a mathematical expression |

Order of Operations | When an equation has more than one operation, we use a specific order to solve the problem |

Expression | A representation of a quantity. It may be made up of numbers, variables, computational symbols, and grouping symbols. |

Simplify | All possible computation has been performed on the expression |

Perimeter | A measure of the path or distance a plane figure |

Area | The surface included within a plane figure |

Volume | Measurement of a three-dimensiional figure of capacity |

Length | The distance between two points along a line |

Mass | The amount of matter in an object |

Liquid Volume | Capacity |

Circle | A set of points on a flat surface with every point an equal distance from a given point called the center |

Circumference | Distance around or perimeter of a circle |

Chord | Line segment connecting any two points on a circle |

Diameter | A special chord that goes throught the center of a circle |

Radius | A line segment joining the center of a circle to any point on the circle |

Elapsed time | The amount of time that has passed between two given times |

Protractor | An instrument used in measuring or drawing angles |

Degree | A measure for angles |

Angle | Two line segments or rays that meet at a common endpoint |

Vertex | A point where two or more straight lines meet |

Right Angle | An angle which is equal to 90 degrees |

Straight Angle | An angle that looks like a straight line; measures 180 degrees |

Acute Angle | An angle which measures less than 90 degrees |

Obtuse Angle | An angle which measures more than 90 degrees |

Triangle | Polygon with 3 sides and 3 angles |

Right Triangle | A triangle that contains one right angle |

Obtuse Triangle | A triangle that has one obtuse angle |

Acute Triangle | A triangle that has three acute angles |

Scalene Triangle | A triangle that has no congruent sides |

Isosceles Triangle | A triangle that contains two congruent sides |

Equilateral Triangle | A triangle in which all sides are congruent |

Transformation | A change in the position of a shape without changing its appearance. |

Reflection | An image of an object when it is viewed in a mirror |

Rotation | The movement of an object about an axis through some angle |

Translation | The shifting of the position of a shape, generally horizontally or vertically, without rotation or reflection |

Probability | The chance of an event occurring |

Likelihood | The probability of an event occurring |

Outcome | Result of an experiment |

Impossible | An event is impossible if it has a probability of 0 |

Unlikely | Not likely to occur |

As likely as | Equally likely |

Equally likely | Outcomes that have the same probability |

Likely | Seeming like certainty |

Certain | An event is certain to occur if it has a probability of 1 |

Sample Space | All possible outcomes of an experiment |

Mean | Sum of the values in a data set divided by the number of values; average |

Median | Middle value of a data set in numerical order |

Mode | Value piece of data that occurs most frequently in the data set |

Range | The spread of a set of data; variation |

Numberical | Expressed as numbers |

Pattern | Sequence that follows a rule or rules to repeat or change |

Variable | A letter or symbol representing a varying quatity |

Equation | A mathematical sentence which contains one or more vaiable and an = sign |