Math Glossary / Click Here

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Chapter 1 - Understand Place Value

digit

pictograph

period

millions

benchmark

 

Chapter 3 - Add and Subtract Whole Numbers

sum

difference

round

estimate

Chapter 5 - Understanding Time

seconds

elapsed time

decade

century

Chapter 2 - Compare and Order Whole Numbers

compare

place value

order

Chapter 4 - Algebra: Use Addition and Subtraction

expression

variable

Commutative Property 

Associative Property

Identity Property

equation

Chapter 6 Collect and Organize Data

survey

frequency

Cumulative Frequency

mean

mode

median

line plot

range

outlier

stem and leaf plot

stem

leaf

scale

interval

 

Chapter 7 Analyze and Graph Data

data

trends

bar graph

circle graph

range

double-bar graph

line graph

 

Chapter 8 Multiplication and Division Facts

factor

fact family

Associative Property

product

multiple

 

quotient

Identity Property

 

inverse operations

Zero Property

 

scale

Commutative Property

 

Chapter 9 Algebra: Use Multiplication and Division Facts

expression

equation

variable

order of operations

Chapter 11 Multiply by Tens

multiple

Distributive Property

product

factor

estimate

round

Chapter 13 Understanding Division

Chapter 10 Multiply by 1-Digit Numbers

factor

equation

product

compatible numbers

Chapter 12 Multiply by 2-Digit Numbers

product

estimate

multistep problem

Chapter 14 Divide by 1-Digit Divisors

division

divisor

quotient

dividend

remainder

 

estimate

division

compatible numbers

quotient

remainder

 

Chapter 15 Divide by 2-Digit Divisors

estimate

mean

quotient

divide

divisor

remainder

Chapter 16 Number Theory

factor

square number

multiple

square root

divisible

prime number

composite number

 

Chapter 17 Lines, Rays, and Angles

point

line

line segment

ray

plane

angle

vertex

protractor

degree

right angle

acute angle

obtuse angle

straight angle

intersecting angle

parallel lines

perpendicular lines

 

 

Chapter 18 Plane Figures

right angle

triangle

equilateral triangle

acute angle

quadrilateral

isosceles triangle

obtuse angle

pentagon

scalene triangle

square

hexagon

trapezoid

rectangle

octagon

Venn Diagram

polygon

regular polygon

circle

center

chord

diameter

radius

compass

 

Chapter 21 Understand Factions

fraction

denominator

numerator

equivalent fractions

simplest form

mixed number

number line

greater than (>), less than (<)

order

 

Chapter 26 Understand Decimals

tenth

decimal

hundredth

decimal point

fraction

thousandth

mixed numbers

equivalent decimal

Chapter 22 Add and Subtract and Mixed Numbers

fraction

denominator

numerator

equivalent fractions

simplest form

like fractions

unlike fractions

 

Chapter 27 Understand Decimals

tenth

decimal

hundredth

decimal point

digit

round

number line

equivalent decimals

regrouping