Middle Grades Math and PreAlgebra
55 cards by A.cheng created on 2014/01/05

55 cards
 Study this
About this Set:
No description has been added.
Available for:
Everyone

1
Variable
Examples
Answer
 Letter that represents a number; variable amounts may change
Explanation

2
Constant
Examples
Answer
 Numeric value that does not change
Explanation

3
Additive Inverse
Examples
Answer
 (mathematics) one of a pair of numbers whose sum is zero
Explanation

4
Coefficient
Examples
Answer
 A number multiplied by a variable in an algebraic expression; a constant number that serves as a measure of some property or characteristic
Explanation

5
Coordinate Plane (Coordinate Grid)
Examples
Answer
 The plane formed by 2 number lines that intersect at their zero points dividing the plane into 4 quadrants; A coordinate system formed by the intersection of a horizontal number line, called the xaxis, and a vertical number line, called the yaxis.
Explanation

6
Irrational Number
Examples
Answer
 a real number that cannot be expressed as a rational number
Explanation

7
Real Number
Examples
Answer
 all rational or irrational numbers; real numbers can be represented on the real number line
Explanation

8
Rational Number
Examples
Answer
 A number that can be written as a/b where a and b are integers, but b is not equal to 0; an integer or a fraction; examples: 6 can be expressed as 6/1; 0.5 can be expressed as 1/2.
Explanation

9
Reciprocal
Examples
Answer
 (mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2; a fraction that has been flipped. The reciprocal of 3/4 is 4/3.
Explanation

10
Multiplicative Inverse
Examples
Answer
 The reciprocal of a number.
Explanation

11
Like Terms
Examples
Answer
 Expressions that contain the same variables to the same power
Explanation

12
Variable
Examples
Answer
 a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity; in the expression 2x + 3, x is the variable
Explanation

13
Algebraic Expression
Examples
Answer
 math phrase that uses variables, numbers and operation symbols
Explanation

14
Order of Operations
Examples
Answer
 the order in which operations in an expression to be evaluated are carried out. 1. parentheses 2. exponets 3. multiplication and divison 4. addition and subtraction
Explanation

15
Numerical Expression
Examples
Answer
 A mathematical phrase involving one or more terms and operations
Explanation

16
Absolute Value of a real number or x
Examples
Answer
 The distance from zero to the real number on a number line.
Explanation

17
Associative Property of Addition
Examples
Answer
 changing the grouping of terms will not change the sum, (a + b) + c = a + (b + c); ex: (5+3) + 1 = 5 + (3 + 1)
Explanation

18
Associative Property of Multiplication
Examples
Answer
 States that changing grouping of factors does not change the product. (a*b)c = a(b*c); ex: (2 * 6) * 7 = 2 * (6 * 7)
Explanation

19
Commutative Property of Addition
Examples
Answer
 For any number a and b, a + b = b + a
Explanation

20
Commutative Property of Multiplication
Examples
Answer
 Changing the order of the factors does not change the product; for example 10 x 9 = 9 x 10; a * b = b * a
Explanation

21
Distributive Property
Examples
Answer
 a property indicating a special way in which multiplication is applied to addition of two or more numbers in which each term inside a set of parentheses can be multiplied by a factor outside the parentheses, such as a(b + c) = ab + ac; ex: 4(3 + 8) = 4(3) + 4(8)
Explanation

22
Additive Identity Property of Zero
Examples
Answer
 The Zero Property of Addition. Adding 0 to a number leaves it unchanged; ex: 67+0=67, 67+0=67
Explanation

23
Inverse Property
Examples
Answer
 The operation which undoes an operation  the opposite operation: subtraction is the inverse of addition, addition is the inverse of subtraction; division is the inverse of multiplication, multiplication is the inverse of division, square root is the opposite of squaring a number
Explanation

24
Ratio
Examples
Answer
 A comparison of two quantities, may be directly represented by numbers and or variables
Explanation

25
Ratio Form
Examples
Answer
 Specific form of representing ratios  examples  a:b or 2:3
Explanation

26
Verbal Ratio Form
Examples
Answer
 Specific form of representing ratios  examples  a to b or 2 to 3
Explanation

27
Fraction Form
Examples
Answer
 Specific form of representing ratios  examples  a/b or 2/3 (denominator cannot be zero)
Explanation

28
Integer
Examples
Answer
 any of the natural numbers (positive or negative) or zero; any of the set of whole numbers and their opposites
Explanation

29
Exponent
Examples
Answer
 The number that indicates how many times the base is used as a factor
Explanation

30
Numerical Expression
Examples
Answer
 An expression that contains only numbers and operations (2 • 3) + 1
Explanation

31
Equivalent Fractions
Examples
Answer
 Fractions that name the same amount or part, 1/2 and 2/4 are equivalent fractions
Explanation

32
Greatest Common Factor (GCF)
Examples
Answer
 The largest common factor of two or more given numbers; The GCF of 27 and 45 is 9.
Explanation

33
Improper Fraction
Examples
Answer
 A fraction in which the numerator is greater than or equal to the denominator; examples: 5/5 or 7/4
Explanation

34
Least Common Multiple (LCM)
Examples
Answer
 The smallest number, other than zero, that is a multiple of two or more given numbers; The LCM of 10 and 18 is 90.
Explanation

35
Prime Factorization
Examples
Answer
 A number written as the product of its prime factors; examples: 10 = 2 • 5, 24 = 2^3 • 3 (^3 means the 3 is written smaller and to the upper right of 2).
Explanation

36
Repeating Decimal
Examples
Answer
 A decimal in which one or more digits repeat infinitely; The repeating portion of the decimal is shown with a short line drawn over the repeating numbers.
Explanation

37
Terminating Decimal
Examples
Answer
 A decimal number that ends or terminates; example: 6.75
Explanation

38
Function
Examples
Answer
 An inputoutput relationship that has exactly one output for each input; An equation written with two variables where only one output exists for each input; example: y = 2x +1
Explanation

39
Linear Equation
Examples
Answer
 An equation whose solutions form a straight line on a coordinate plane; example: y = 3x  1
Explanation

40
Linear Function
Examples
Answer
 A function whose graph is a straight line.
Explanation

41
Ordered Pair
Examples
Answer
 A pair of numbers that can be used to locate a point on a coordinate plane.
Explanation

42
Origin
Examples
Answer
 The point where the xaxis and yaxis intersect on the coordinate plane; (0, 0).
Explanation

43
Quadrant
Examples
Answer
 The x and yaxes divide the coordinate plane into four regions. Each region is called a quadrant.
Explanation

44
Sequence
Examples
Answer
 An ordered list or numbers; example: 2,4,6,8,10...
Explanation

45
Factor
Examples
Answer
 any of the numbers (or symbols) that form a product when multiplied together; 3 is a factor of 9
Explanation

46
Multiple
Examples
Answer
 the product of a quantity by an integer; example 24 is a multiple of 3 and 8
Explanation

47
Product
Examples
Answer
 a quantity obtained by multiplication; the answer to a multiplication problem
Explanation

48
Quotient
Examples
Answer
 the number obtained by division; the ratio of two quantities to be divided; the answer to a division problem
Explanation

49
Proportion
Examples
Answer
 statement that two fractions or ratios are equal
Explanation

50
Similar
Examples
Answer
 same shape, but different size
Explanation

51
Scale
Examples
Answer
 the ratio between the size of something and a representation of it
Explanation

52
Scale Factor
Examples
Answer
 The ratio of dimensions of the new image to those of the original figure
Explanation

53
Scale Drawing
Examples
Answer
 A diagram of an object in which the dimensions are in proportion to the actual dimensions of the object.
Explanation

54
Indirect Measurement
Examples
Answer
 A method of measurement that uses formulas, similar figures, and/or proportions.
Explanation

55
Constant
Examples
Answer
 a quantity that does not vary
Explanation