6Th Grade Math Sol Vocabulary

Front 1

absolute value

Back 1

the number of spaces that a number is from zero on a number line

Front 2

acute

Back 2

an angle less than 90 degrees

Front 3

additive identity property

Back 3

zero added to any number does not change that number

Front 4

additive inverse property

Back 4

a number plus its opposite is zero. 2 + -2 = 0

Front 5

angle

Back 5

a figure made from two rays with a common end point

Front 6

area

Back 6

the inside space of a two dimensional shape

Front 7

arithmetic sequence

Back 7

a sequence which uses + or -, e.g. 2, 4, 6, 8, 19 (+2)

Front 8

associative property for addition

Back 8

the sum of a set of numbers is the same regardless of its grouping

Front 9

associative property for multilication

Back 9

the product of a set of numbers is the same regardless of its grouping

Front 10

balance point

Back 10

the mean or average of a set of numbers

Front 11

bar graph

Back 11

a chart where values are represented by rectangles

Front 12

base

Back 12

a number paired with an exponent. In four squared, four is the base.

Front 13

base

Back 13

the bottom side of a figure

Front 14

benchmark

Back 14

a well known number such as 1/2 that can be used to compare with less known numbers such as 7/12

Front 15

bimodal

Back 15

when a set of numbers has two modes

Front 16

bisect

Back 16

to divide something in half

Front 17

capacity

Back 17

the maximum amount that something can contain

Front 18

centimeter

Back 18

1/100th of a meter. 2.5 cm = 1 inch

Front 19

central angle

Back 19

an angle in a circle that passes through the center

Front 20

circle graph

Back 20

a graph for parts of a whole, commonly called a pie chart

Front 21

circumference

Back 21

the length of a circle; similar to perimeter

Front 22

coefficient

Back 22

a constant used to multiply another quantity, In 3x=6, the coefficient is 3

Front 23

common difference

Back 23

the difference between all terms in an arithmetic sequence, e.g. +2

Front 24

common ratio

Back 24

the difference between all terms in a geometric sequence, e.g. x2

Front 25

commutative property for addition

Back 25

the sum of a set of numbers is the same regardless of its order

Front 26

commutative property for mutiplication

Back 26

the product of a set of numbers is the same regardless of its order

Front 27

compass

Back 27

a tool used to draw circles

Front 28

compatible numbers

Back 28

numbers that are easy to manipulate mentally

Front 29

compound event

Back 29

an event that consists of two, or more, simple events;

Front 30

congruent

Back 30

the same shape and size

Front 31

coordiante plane

Back 31

this is formed by two intersecting number lines called x and y

Front 32

corresponding

Back 32

at the same position in different figures

Front 33

cube

Back 33

a box-shaped solid object that has six identical square faces

Front 34

cup

Back 34

1/2 a pint, or 1/16 of a gallon

Front 35

data

Back 35

numbers collected for analysis

Front 36

decimal

Back 36

a number written using tenths, hundredths, thousandths or other fractions of 10 such as the number 2.475.

Front 37

dependent events

Back 37

events that occur only after a previous event.

Front 38

diagonal

Back 38

slanted

Front 39

diameter

Back 39

the length of a line from one edge of a circle, through the center, to the other side

Front 40

difference

Back 40

the result of subtraction

Front 41

distributive property

Back 41

a(b + c) = ab + ac.

Front 42

dividend

Back 42

a number to be divided by another number. In 72 ÷ 9, this is 72

Front 43

divisor

Back 43

a number that divides into another. In 72 ÷ 9, this is 9

Front 44

equation

Back 44

a mathematical statement that two expressions are equal

Front 45

equivalent

Back 45

equal

Front 46

estimation

Back 46

a rough calculation or guess

Front 47

exponent

Back 47

a small number which shows the number of times that a base is to be multiplied by itself. In four squared, 2 is the exponent

Front 48

expression

Back 48

a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide).

Front 49

face

Back 49

each of the surfaces of a solid

Front 50

factor

Back 50

a number which is multiplied with another to make a given number

Front 51

foot

Back 51

12 inches

Front 52

formula

Back 52

a group of symbols that make a mathematical statement

Front 53

fraction

Back 53

a numerical quantity that is not a whole number, written as one number divided by another

Front 54

front-end estimation

Back 54

an estimation method that uses the first digit of a number & make the other digits zeros.

Front 55

gallon

Back 55

4 quarts

Front 56

geometric sequence

Back 56

a sequence which uses X or ÷, e.g. 2, 4, 8, 16 (x2)

Front 57

gram

Back 57

1/1000th of a kilogram

Front 58

greatest common factor

Back 58

the largest number that divides two or more numbers evenly.

Front 59

grouping symbols

Back 59

parentheses and brackets, used to show which calculations are done first

Front 60

hatch or tick mark

Back 60

small marks on sides of a figure to show congruence

Front 61

identity elements

Back 61

in addition, this is zero. In multiplication, it's one. It's the number which doesn't change another number

Front 62

improper fraction

Back 62

a fraction in which the numerator is greater than the denominator, such as 5/4

Front 63

inch

Back 63

1/12 of a foot, about 2.5cm

Front 64

independent events

Back 64

events that do not affect each other's probability

Front 65

inequality

Back 65

a number sentence with <, >, or ≠

Front 66

integer

Back 66

positive whole numbers, their opposites, and zero

Front 67

intersecting

Back 67

crossing

Front 68

inverses

Back 68

operations that undo each other. Multiplciation is the inverse of division; addition for subtraction

Front 69

isosceles trapezoid

Back 69

a trapezoid with the non-parallel sides congruent

Front 70

kilogram

Back 70

1000 grams, or a bit over 2 pounds

Front 71

kilometer

Back 71

1000 meters, or a little over half a mile

Front 72

kite

Back 72

a quadrilateral with adjacent congruent sides

Front 73

least common multiple

Back 73

the smallest multiple that is exactly divisible by every member of a set of numbers; "the least common multiple of 12 and 18 is 36"

Front 74

line graph

Back 74

a chart that uses points andn lines to show change over time.

Front 75

line segment

Back 75

part of a line

Front 76

liter

Back 76

a metric unit similar to a quart

Front 77

mass

Back 77

the amount of matter in something

Front 78

mean

Back 78

the average of a set of numbers. the mean of 0, 4, 6 is 2

Front 79

measures of center

Back 79

numbers that give some indication of the distribution of data. Three common measures of central tendency are mean, median, and mode.

Front 80

median

Back 80

the middle value in a set of numbers.

Front 81

meter

Back 81

100 cm

Front 82

metric system

Back 82

the decimal measuring system based on the meter, liter, and gram

Front 83

mile

Back 83

the customary unit of long distance. about 1 1/2 kilometers

Front 84

milliliter

Back 84

1/1000th of a liter

Front 85

millimeter

Back 85

1/1000th of a meter

Front 86

mixed number

Back 86

a number with an integer and a fraction

Front 87

mode

Back 87

the most frequent value in a set of numbers

Front 88

multiple

Back 88

a number that can be divided by another number without a remainder

Front 89

multiplicative identity property

Back 89

any number times 1 is unchanged

Front 90

multiplicative inverse property

Back 90

a number times its reciprocal is 1, e.g. 8 x 1/8 = 1

Front 91

multiplicative property of zero

Back 91

zero times any number is zero

Front 92

net

Back 92

a flat model that can be cut out and assembled into a 3D shape

Front 93

noncongruent

Back 93

not the same shape and size

Front 94

obtuse

Back 94

an angle greater than 90 degrees

Front 95

opposites

Back 95

Numbers with the same absolute value but different signs, e.g. 5 and -5

Front 96

opposites

Back 96

two numbers that are the same distance from zero on a number line, one positive, and one negative

Front 97

order of operations

Back 97

rules which determine the operations to be done first. PEMDaS

Front 98

ordered pair

Back 98

two numbers that identify a point in a coordinate plane, written as (x, y)

Front 99

origin

Back 99

where the x and y axes intersect in a coordinate plane. Has the values (0,0)

Front 100

ounce

Back 100

1/16 of a pound, or about 30 grams

Front 101

outcome

Back 101

the result of an event

Front 102

parallel

Back 102

lines that are side by side and never touch

Front 103

parallelogram

Back 103

a quadrilaterial with opposite parallel sides

Front 104

percent

Back 104

the rate, number, or amount in each hundred

Front 105

perfect square

Back 105

a number (for example, 9) that is the square of another number (in this case, 3)

Front 106

perimeter

Back 106

the distance around the edge of a shape

Front 107

perpendicular

Back 107

a intersecting, 90° line

Front 108

perpendicular bisector

Back 108

a line that is perpendicular to the middle of another line

Front 109

pi

Back 109

the ratio of a circumference of a circle to its diameter, about 3.14

Front 110

pint

Back 110

customary unit; 2 cups or about 1/4 of a liter

Front 111

plane

Back 111

a flat surface that extends in all directions

Front 112

plane figure

Back 112

a shape on one plane, with height and width, like a circle or square

Front 113

polygon

Back 113

a closed figure made from three or more lines

Front 114

pound

Back 114

customary unit; 16 ounces or about 1/2 a kilogram

Front 115

power of a number

Back 115

exponents are read using this term, so 7^4 is read as "seven to the fourth power"

Front 116

probability

Back 116

a measure of how likely it is that some event will happen

Front 117

product

Back 117

the result of multiplication

Front 118

proper fraction

Back 118

a fraction that is less than one, with the numerator less than the denominator

Front 119

protractor

Back 119

a tool used to measure angles

Front 120

quadrants

Back 120

the four areas of the coordinate plane

Front 121

quadrilateral

Back 121

a four sided plane figure

Front 122

quart

Back 122

customary unit; 32 fluid ounces, or about 1 liter

Front 123

quotient

Back 123

the result of division

Front 124

radius

Back 124

the distance from the center to the edge of the circle

Front 125

rate

Back 125

a ratio that compares two quantieis measured in different units

Front 126

ratio

Back 126

a relationship between two values, where one value is divided by the other, commonly expressed as a fraction.

Front 127

rational number

Back 127

an integer or a fraction

Front 128

ray

Back 128

a line with a point on one end

Front 129

reciprocal

Back 129

one of a pair of numbers whose product is 1: such as 2/3 and 3/2

Front 130

rectangle

Back 130

a plane figure with four straight sides and four right angles

Front 131

rectangular prism

Back 131

a solid figure where all sides are rectangles and all sides are perpendicular, such as a brick or a shoebox.

Front 132

repeating decimal

Back 132

a decimal with endlessly repeating digits, 1 ÷ 3 = .33333

Front 133

rhombus

Back 133

any parallelogram with equal sides, including a square

Front 134

right angle

Back 134

an angle that is exactly 90 degrees

Front 135

rounding

Back 135

to change a number to make it more useful, e.g. 5.2355 = $5.24

Front 136

sample space

Back 136

a list or diagram of all the possible outcomes of an experiment

Front 137

simple event

Back 137

an event with a single result

Front 138

simplest form

Back 138

a fraction where both numbers have only 1 as a common factor

Front 139

simplify

Back 139

fractions are simplified by dividing both numbers by common factors, e.g. 4/8 ÷ 2/2 = 1/2

Front 140

solid figure

Back 140

a three-dimensional shape

Front 141

square

Back 141

a plane figure with four equal straight sides and four right angles

Front 142

square root

Back 142

one of two equal factors of a number

Front 143

straight angle

Back 143

a line that measuers 180 degrees

Front 144

sum

Back 144

the result of addition

Front 145

surface area

Back 145

the area required to cover a three-dimensional shape.

Front 146

survey

Back 146

a set of questions used to collect data about people

Front 147

terminating decimal

Back 147

a decimal whose digits do not repeat, e.g. 7 ÷ 8 = 0.875

Front 148

terms

Back 148

parts of an expression separated by + or -

Front 149

ton

Back 149

customary unit; 2000 pounds, or about 1000 kilograms

Front 150

trapezoid

Back 150

a quadrilateral with only one pair of parallel sides

Front 151

triangle

Back 151

a closed figure with three sides

Front 152

U.S. Customary System

Back 152

the measuring system the users inches, pounds, and liters

Front 153

variable

Back 153

a letter used to represent an number

Front 154

vertex

Back 154

the meeting point of two lines in an angle; a corner

Front 155

volume

Back 155

the amount of space inside something

Front 156

weight

Back 156

the force of gravity pulling mass down

Front 157

whole number

Back 157

a number without fractions; an integer

Front 158

x-axis

Back 158

the horizontal number line in a coordinate plane

Front 159

yard

Back 159

customary unit; 3 feet

Front 160

y-axis

Back 160

the vertical number line in a coordinate plane