RFMS-Math7-Vocabulary

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Direct Proportion (Proportional Relationship) (71)

A linear function in the form y = mx where one quantity is a constant multiple of the other. Example: y = mx

Expression (52)

A name for a number.

Base of a Power (14)

A number being repeatedly multiplied.

Prime Number (39)

A number that has exactly 2 factors (1 and itself). Example: 11= 11 x 1.

Principal (80)

The initial amount of money borrowed or invested.

Greatest Common Factor (GCF) (43)

The largest common factor of two or more given numbers.

Least Common Multiple (LCM) (44)

The least number, other than zero, that is a multiple of two or more given numbers.

Quotient (12)

The answer to a division problem.

Product (9)

The answer to a multiplication problem. Example: 4 x 9 =

Difference (7)

The answer to a subtraction problem.

Sum (6)

The answer to an addition problem.

Denominator (47)

The bottom number in a fraction.

Absolute Value (38)

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

Angle (91)

A geometric figure that is two rays with a common endpoint called the vertex.

Point (86)

A geometric figure that show location.

Squared (16)

A base number raised to the second power.

Cubed (17)

A base number raised to the third power.

Polygon (100)

A closed plane figure made up of line segments connected only at their endpoints.

Simple Interest (79)

A fee paid for the use of money. You pay interest when you borrow money.

Plane (89)

A flat surface that goes on forever in all directions.

Improper Fraction (49)

A fraction greater than or equal to one. (Numerator is larger than the denominator). Example: 12/4; 25/6; 50/25.

Proper Fraction (48)

A fraction less than one. (Denominator is Greater than Numerator). Example: 3/5; 1/4; 11/14.

Complex Fraction (68)

A fraction that has one or more fractions in the numerator and/or denominator.

Line (87)

A geometric figure that continues on forever in two directions.

Ray (90)

A geometric figure that is part of a line that has one endpoint and goes on forever in one direction.

Line Segment (88)

A geometric figure that is part of a line that has two endpoints.

Exponent (15)

A number that tells how many times to use the base as a factor. Example: 5 to the 3rd power: 5 x 5 x 5 = 125

Prime Factorization (41)

A number written as the product of its prime factors.

Sales Tax (78)

A percent of the cost of the item that is charged by the government to raise money.

Commission (77)

A percent of the total amount of sales made.

Decimal System (4)

A place value system that uses 10 as its base.

Scale Drawing (84)

A proportional two-dimensional drawing that is similar to an actual object.

Percent (67)

A ratio that compares a number to 100.

Equation (60)

A statement that 2 expressions are equal.

Proportion (66)

A statement that 2 ratios are equal. Example: 3/4 = 12/16.

Inequality (63)

A statement that shows the relationship between quantities that are not equivalent.

Variable (53)

A symbol (usually a letter) that represents a number.

Solution (62)

A value or values that make an equation true.

Expanded Notation (3)

A way of writing a number as a sum of the products of each digit times its place value.

Mixed Numbers (51)

A whole number and a proper fraction in its simplest form.

Identity Property of + (22)

Add zero to a number and the number stays the same. 8 + 0 = 8.

Acute Angle (92)

An angle that measures between 0 and 90 degrees.

Obtuse Angle (94)

An angle that measures between 90 and 180 degrees.

Straight Angle (95)

An angle that measures exactly 180 degrees. It looks like a line because it has two rays going in opposite directions.

Right Angle (93)

An angle that measures exactly 90 degrees.

Variable Expression (54)

An expression that contains a variable.

Vertical Angles (96)

Angles that are opposite each other when two lines intersect. They share the same vertex and are congruent.

Adjacent Angles (97)

Angles that share a side (which is a ray) and a vertex. They do not overlap.

Associative Property of x (21)

Changing the GROUPING of the numbers does not change the answer. Example: 3 (4 x 5) = (4 x 5) 3.

Associative Property of + (20)

Changing the GROUPING of the numbers does not change the answer. Example: 3 + (4 + 5) = (4 + 5) + 3.

Ratio (64)

Comparison of 2 numbers using division. Examples: 3:2, 3 to 2, 3/2.

Congruent Shapes (82)

Figures that have the same shape and the same size. All parts have the same measure (Congruent shapes are similar shapes that have a 1:1 ratio or scale).

Similar Shapes (81)

Figures with the same shape but not necessarily the same size. Corresponding sides are proportional, so there is a ratio between the sides of the figures called a scale.

Discount (75)

The amount of money saved when an item goes on sale.

Percent of Change (74) (increase/decrease)

The amount stated as a percent that a number increases or decreases.

Equivalent Fractions (50)

Fractions having the same value.

Identity Property of x (Multiplicative Identity) (23)

Multiply a number by 1 and the number stays the same.

Multiplication Property of 0 (24)

Multiplying a number by 0 gives a product of 0.

Distributive Property (25)

Multiplying a number by a sum is the same as finding the sum of the products of the number and each addend.

Dividend (11)

Number being divided into.

Divisor (10)

Number dividing by.

Addends (5)

Numbers that are added together. Example: 4 + 9 =

Factors (8)

Numbers that are multiplied together.

Real Numbers (73)

Numbers that are represented on the number line (the union of rational and irrational numbers). Non Examples: the square root of a negative number.

Rational Numbers (45)

Numbers that can be written in fraction form.

Irrational numbers (72)

Numbers that cannot be written in fraction form (non-terminating and non-repeating decimals). Example: .121121112 ...

Composite Numbers (40)

Numbers that have more than 2 factors (3 or more). Example: 12 has as factors: 1, 2, 3, 4, 6, 12.

Counting numbers/Natural Numbers (28)

Numbers used for counting. {1, 2, 3, 4, ...}.

Coefficient (55)

Numerical factor in front of a variable (the number before the variable).

Reciprocal (36)

One of two numbers whose product is 1; also called multiplicative inverse.

Unit Price (70)

Price for one unit of measure.

Unit Rate (69)

Rate for one unit of measure. Example: 80mi/2hrs = 40mi/1hr.

Rate (65)

Ratio that compares 2 different quantities (that have different units). Example: MPH.

Order of Operations (32)

Rules for simplifying expressions that have more than 1 operation (1. Grouping Symbols; 2. Exponents; 3. Multiply/Divide in order Left to Right; 4. Add/Subtract in order left to Right).

Whole Numbers (29)

Set of all counting numbers plus 0. {0, 1, 2, 3, ...}.

Like Terms (58)

Terms with the same variables raised to the same exponents.

Markup (76)

The amount of money added to the original cost to get the new price.

Remainder (13)

The number left over in a division problem.

Constant (56)

The number term in an expression.

Additive Inverse (35)

The opposite of a number; one of two numbers whose sum is 0.

Terms (57)

The parts of an expression that are added or subtracted.

Combining Like Terms (59)

The process of simplifying expressions with like terms.

Inverse Property of x (Multiplicative Inverse) (27)

The product of a number and its reciprocal is 1 (Property of Reciprocals).

Multiplicative Inverse (37)

The product of a number and its reciprocal or multiplicative inverse is one.

Multiple (42)

The product of any number and any whole number is a multiple of that number.

Commutative Property of + (18)

The property that states that changing the ORDER of the addends does not change the sum.

Commutative Property of x (19)

The property that states that changing the ORDER of the factors does not change the product.

Scale (83)

The ratio between two sets of measurements. For example, the legend on a map is an example of scale (1inch = 2 feet).

Integers (30)

The set of whole numbers and their opposites.

Geometry (85)

The study of points, lines, planes, and the surfaces they form.

Inverse Property of + (Additive Inverse) (26)

The sum of a number and its opposite is 0.

Digits (1)

The ten symbols used to write numbers in our number system. Ex. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

Numerator (46)

The top number in a fraction.

Place Value (2)

The value of the position of a digit in a number.

Evaluate (33)

To find the value of an expression by substituting in (plugging in) the given value for the variable and then simplifying. Example: 2x + 5 if x=7.

Solve (61)

To find the value of the variable that makes the sentence true.

Simplify (31)

To rename an expression using the easiest form to understand (the least amount of symbols).

Supplementary Angles (99)

Two angles whose sum is 180 degrees.

Complementary Angles (98)

Two angles whose sum is 90 degrees.

Opposites (34)

Two numbers whose sum is zero.


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