A
- Above
- Acute angle
- Acute triangle
- Add
- Addend
- Adding and subtracting decimals
- Adding mixed numbers
- Addition
- Additive comparison
- Additive identity property of 0
- Algebra
- Algorithm
- Alike
- Analog clock
- And
- Angle
- Angle measure
- Arc
- Area
- Area and perimeter
- Area and perimeter of triangle
- Area formula
- Area model
- Area model division
- Area model multiplication
- Area of a quadrilateral
- Area of a rectangle
- Area of a square
- Area of irregular shapes
- Area of rectangle formula
- Area of shape
- Area of 2d shapes
- Arithmetic
- Arithmetic patterns
- Array
- Ascending order
- Associative property
- Associative property of addition
- Associative property of multiplication
- Attribute
- Axis plural axes
- A.m.
B
C
- Capacity
- Cardinal numbers
- Category
- Cent
- Centimeter
- Centimeter cm
- Circle
- Classify
- Clockwise
- Closed shape
- Column
- Common denominator
- Common factor
- Common multiple
- Common numerator
- Commutative property
- Commutative property of addition
- Commutative property of multiplication
- Compare
- Compatible numbers
- Compensation
- Compose
- Composite number
- Composite shape
- Cone
- Congruent
- Consecutive numbers
- Coordinates
- Coordinate plane
- Coordinate system
- Corresponding terms
- Count
- Counterclockwise
- Counting number
- Count back
- Count on
- Cross multiplication
- Cube
- Cubic unit
- Cup
- Curve
- Curved line
- Curved surface
- Customary system
- Customary units
- Cylinder
D
- Data
- Day
- Decagon
- Decagonal prism
- Decimal
- Decimal chart
- Decimal fraction
- Decimal place value
- Decimal point
- Decimeter
- Decompose
- Decomposing fractions
- Degree angle measure
- Dekameter
- Denominator
- Descending Order
- Diagonal
- Difference
- Different
- Digit
- Dime
- Dimensions
- Distributive property
- Dividend
- Dividing decimals
- Dividing fractions
- Dividing Fractions with Whole Numbers
- Dividing mixed numbers
- Divisible
- Division
- Division property of equality
- Divisor
- Dollar
- Doubles
- Doubles minus 1
- Doubles plus 1
- Dozen
E
- Edge
- Eight
- Eighteen
- Eighths
- Elapsed time
- Eleven
- Endpoint
- Equal
- Equal groups
- Equal parts
- Equal shares
- Equal sign
- Equation
- Equiangular triangle
- Equilateral triangle
- Equivalent
- Equivalent decimals
- Equivalent fractions
- Estimate
- Evaluate
- Even and odd numbers
- Even number
- Expanded form
- Expanded form with decimals
- Experiment
- Exponent
- Expression
- Expression number
F
H
I
L
- Larger
- Lateral face
- Least common denominator
- Least common multiple
- Length
- Less
- Less than
- Lighter
- Like denominators
- Like numerators
- Line
- Linear measurement
- Line graph
- Line of symmetry
- Line plot
- Line segment
- Line symmetric figures
- Line symmetry
- Liquid measurement chart
- Liter
- Longer
- Longest
- Long division
- Long multiplication
- Lowest terms
M
- Make ten
- Making ten
- Mass
- Match
- Measure
- Measurement
- Measurement units
- Measuring tape
- Meter m
- Meter stick
- Metric system
- Midnight
- Mile
- Milligram
- Milliliter
- Millimeter mm
- Minuend
- Minus
- Minute
- Minute hand
- Mixed number
- Money
- Month
- More
- More than
- Most
- Multiple
- Multiplication
- Multiplication chart
- Multiplication property of equality
- Multiplicative comparison
- Multiplicative identity property of 1
- Multiplicative inverse
- Multiplier
- Multiply
- Multiplying decimals
- Multiplying fractions
- Multiplying fraction by a whole number
- Multiplying mixed numbers
N
O
P
- Pair
- Parallelogram
- Parallel and perpendicular lines
- Parallel lines
- Parentheses
- Partial product
- Partial quotient
- Partition
- Partitive division
- Pattern
- Penny
- Pentagon
- Pentagonal prism
- Pentagonal pyramid
- Perimeter
- Perimeter of a polygon
- Perimeter of a rectangle
- Perimeter of a square
- Perimeter of a triangle
- Period
- Perpendicular
- Perpendicular lines
- Picture graph
- Pint
- Place value
- Plane
- Plane figure
- Plus
- Point
- Polygon
- Polyhedron
- Pound
- Powers of ten
- Prime number
- Prism
- Product
- Properties of addition
- Properties of multiplication
- Protractor
- Pyramid
- P.m.
Q
R
- Ray
- Reasonableness
- Rectangle
- Rectangular prism
- Rectilinear figure
- Regroup
- Regular polygon
- Related facts
- Remainder
- Repeated addition
- Repeated subtraction
- Rhombus
- Right angle
- Right rectangular prism
- Right triangle
- Roll
- Roman Numerals
- Rounding
- Rounding decimals
- Rounding to the nearest hundredth
- Round a whole number
- Round to the nearest tens
- Row
- Ruler
S
- Same
- Same height
- Same length
- Same number
- Same weight
- Scale
- Scalene triangle
- Scale on a graph
- Scaling
- Second
- Sequence
- Seven
- Seventeen
- Shape
- Shorter
- Shortest
- Side
- Sides of equal length
- Side of a polygon
- Side of a shape
- Simplest form
- Simplify
- Simplifying fractions
- Simplify mixed numbers
- Six
- Sixteen
- Sixths
- Size
- Skip count
- Slide
- Smaller
- Solid
- Solid figure
- Sort
- Sphere
- Square
- Square unit
- Stack
- Standard form
- Straight angle
- Subtract
- Subtracting decimals
- Subtracting fractions
- Subtracting mixed numbers
- Subtracting time
- Subtraction property of equality
- Subtraction with regrouping
- Subtract fractions with unlike denominators
- Subtrahend
- Sum
- Survey
- Symmetry
T
- Take away
- Taller
- Tallest
- Tally chart
- Tally mark
- Tally table
- Ten
- Tens
- Tenth
- Tenths
- Term
- Third
- Thirteen
- Thousand
- Thousands
- Thousandth
- Thousandths
- Three
- Three dimensional figures
- Tiling
- Time
- Times tables
- Time interval
- Ton
- Transformation geometry
- Trapezoid
- Triangle
- TRUE
- Twelve
- Twenty
- Two
- Twodimensional
- Twodimensional figures
- Types of angles
- Types of fractions