# STAR Math Vocabulary 5th Grade

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## Presentation Transcript

### Absolute Value :

Absolute Value The distance of a number from zero on a number line.

### Acute Angle :

Acute Angle An angle measuring less than 90 degrees.

### AREA :

AREA Of a rectangle or parallelogram: LENGTH times HEIGHT Of a triangle: LENGTH times HEIGHT divided by two

### Associative property :

Associative property The property that states that the way addends or factors are grouped does not change the answer.

### Base :

Base A number used as a repeated factor.

### Commutative Property :

Commutative Property The property that states that when the order of two or more addends or products is changed, the answer is the same

### Composite Number :

Composite Number A whole number having two or more factors; a number that is NOT prime.

### Congruent :

Congruent Having the same size and shape.

### Coordinate Plane :

Coordinate Plane A plane formed by two intersecting and perpendicular number lines called axes.

### Coordinates :

The numbers in an ordered pair. Coordinates

### Cube :

Cube A solid figure with six congruent square faces.

### Denominator :

Denominator The number below the bar in a fraction that tells how many equal parts are in the whole.

### Diameter :

Diameter A line segment that passes through the center of a circle and has its endpoints on the circle/

### DIFFERENCE :

DIFFERENCE The result of subtracting; the answer to a subtraction problem.

### Distributive Property :

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.

### Equilateral Triangle :

Equilateral Triangle A triangle with three congruent sides.

### Equivalent Fractions :

Equivalent Fractions Fractions that name the same amount.

### Exponent :

Exponent A number that shows how many times the base is used as a factor.

### Factor :

Factor A number that is multiplied by another number to find a product.

### Factor Tree :

Factor Tree A diagram that shows the prime factors of a number or its PRIME FACTORIZATION.

### Gallon :

Gallon A customary unit for measuring capacity. Four Quarts = 1 Gallon 8 pints = 1 Gallon 16 cups = 1 Gallon

### Gram :

Gram A metric unit for measuring mass. 1,000 milligrams = 1 gram 1,000 grams = 1 Kilogram

### GCF (Greatest Common Factor) :

GCF (Greatest Common Factor) The greatest factor that two or more numbers have in common.

### Intersecting Lines :

Intersecting Lines Lines that cross at exactly one point.

### Isosceles Triangle :

Isosceles Triangle A triangle with two congruent or equal sides.

### LCM (Least Common Multiple) :

LCM (Least Common Multiple) The smallest number, other than zero, that is a common multiple of two or more numbers

### Line Symmetry :

Line Symmetry A figure has line symmetry if a line can separate the figure into two congruent parts.

### mean :

mean A two-step process: adding all the numbers in a series, then diving the sum by the number of numbers.

### median :

median After putting a series of numbers in number order, the number in the MIDDLE.

### Mode :

Mode The number that repeats the MOST in a series of numbers.

### Multiple :

Multiple The product of a given whole number and another whole number.

### Number Line :

Number Line A line with equally spaced tick marks named by numbers.

### Numerator :

Numerator The number above the bar in a fraction that tells how many equal parts of the whole are being considered.

### Obtuse Angle :

Obtuse Angle An angle whose measure is greater than 90° and less than 180°

### Ordered Pair :

Ordered Pair A pair of numbers used to locate a point on a coordinate plane; the first number tells how far to move on the X-axis and the second number tells how far to move on the Y-axis.

### Order of Operations :

Order of Operations Rules for performing operations in expressions with more than one operation.

### Ounce :

Ounce A customary unit for measuring weight.

### Parallelogram :

Parallelogram A quadrilateral whose opposite sides are parallel and congruent.

### Percent :

Percent The ratio of a number to 100.

### PERIMETER :

PERIMETER The sum of all the sides of a shape.

### Perpendicular Lines :

Perpendicular Lines Two lines that intersect to form four right angles.

### Prime Number :

Prime Number A whole number greater than 1 that has exactly two factors, one and itself.

### Probability :

Probability The likelihood that an event will happen.

### Product :

Product The result of multiplying; the answer to a multiplication problem.

### Quotient :

Quotient The result of dividing; the answer to a division problem.

Radius A line segment with one endpoint at the center of a circle and the other endpoint on the circle. Radius = ½ Diameter

### range :

range The difference between the BIGGEST and the SMALLEST numbers in a series of numbers.

### Right Angle :

Right Angle An angle measuring EXACTLY 90 degrees.

### Rounding :

Rounding Replacing a number with one that tells about how many.

### Simplest Form :

Simplest Form A fraction is in simplest form when it has been reduced to its smallest form.

### SUM : 