# Mathematics

**Add Decimal Numbers**

**Add Numbers up to Millions**

**Add Numbers up to the Millions**

**Add Numbers up to the Millions: Word Problems**

**Add Three of More Numbers up to the Millions**

**Add Whole Numbers up to the Billions**

**Adding -3 Plus Single Digit Numbers**

**Adding 0**

**Adding 1**

**Adding 1's and 2's**

**Adding 2**

**Adding 3**

**Adding 3-Digit Whole Numbers**

**Adding 3's and 4's**

**Adding 4**

**Adding 4-Digit Whole Numbers**

**Adding 5**

**Adding 5's and 6's**

**Adding 6**

**Adding 7**

**Adding 7's and 8's**

**Adding 8**

**Adding 9's and 0's**

**Adding Double Digits**

**Adding Doubles**

**Adding Single Digit Numbers**

**Adding Single Digits**

**Adding Whole Hundreds**

**Adding Whole Numbers**

**Adding Whole Numbers from 0-20**

**Adding Whole Tens**

**Adding With One and Two Digits**

**Adding with Pictures**

**Adding- 4 Plus Single Digit Numbers**

**Adding- 5 Plus Single Digit Numbers**

**Addition**

**Addition**

**Addition**

**Addition**

**Addition & Subtraction**

**Addition Patterns over Increasing Place Values**

**Addition Vocabulary**

**Addition with Carrying**

**Addition Word Problems**

**Addition-Fill in the Missing Digits**

**Duplicating Appaloosas**

**Estimate the Sum**

**Inequalities in Addition**

**Inverse Relationships**

**Missing Symbols**

**Number and Operations in Base Ten**

**Properties of Addition**

**Subtraction with Pictures**

**Sums and Differences to 10**

**Value of a Digit**

**Words Associated with Addition**Show All

**Addition & Subtraction**

**Inequalities in Subtraction**

**Inverse Relationships**

**Missing Symbols**

**Number and Operations in Base Ten**

**Subtract Decimal Numbers**

**Subtract multiples of 10**

**Subtract Numbers up to Millions**

**Subtract Whole Numbers up to the Billions**

**Subtracting 0**

**Subtracting 1**

**Subtracting 2**

**Subtracting 3**

**Subtracting 4**

**Subtracting 5**

**Subtracting 6**

**Subtracting 7**

**Subtracting 8**

**Subtracting 9**

**Subtracting a One Digit Number from a Two Digit Number**

**Subtracting Multiples of 10**

**Subtracting two Two-Digit Numbers Without Regrouping**

**Subtracting two Two-Digit Numbers- With Regrouping**

**Subtracting Whole Numbers**

**Subtracting with Double Digits**

**Subtracting with Single Digits**

**Subtraction**

**Subtraction Equations**

**Subtraction Operations and Algebraic Functions**

**Subtraction with Carrying**

**Subtraction with Regrouping**

**Subtraction Word Problems**

**Subtraction-Fill in the Missing Digits**

**Sums and Differences to 10**

**Value of a Digit**Show All

**About the United States Coins**

**American Coins**

**American Coins**

**Black and White Abstract**

**British Currency**

**Chinese Currency**

**Coins**

**Count Coins and Bills- up to $5**

**Dividing Money**

**Japanese Currency**

**Money**

**Multiplying Money**

**The Inverse of Multiplication and Division**

**U.S. Coins**

**United States Paper Currency**

**US Paper Currency**Show All

**100 Cars**

**50 Butterflies**

**Block counting by ten's to 100**

**Block Counting with 1's and 10's**

**Count animals to 10**

**Count animals to 3**

**Count animals up to 20**

**Count animals up to 3**

**Count Apples to 5**

**Count Dots to 5**

**Count dots up to 20**

**Count Down from 20**

**Count Food to 10**

**Count food to 3**

**Count Food to 5**

**Count items to 10**

**Count items to 3**

**Count items to 3**

**Count items to 5**

**Count Items to 5**

**Count items up to 20**

**Count oranges up to 20**

**Count pigs up to 20**

**Count Rabbits to 5**

**Count Shapes to 10**

**Count shapes up to 20**

**Count to 10**

**Count to 100 by 5's**

**Count to 20**

**Count to 20 by 2's**

**Count to 30 by 3's**

**Count to 40 by 4's**

**Count to 90 by 6's**

**Count triangles to 10**

**Counting 1-20: Review**

**Counting and Cardinality**

**Counting Animals up to 3**

**Counting apples to 3**

**Counting Backwards from Ten**

**Counting by 10**

**Counting by 10's**

**Counting by 2**

**Counting by 2's**

**Counting by 5**

**Counting by 5's**

**Counting by Tens to 100**

**Counting dots to 3**

**Counting Dots up to 3**

**Counting Food to 3**

**Counting forward and backward**

**Counting from 0 to 19**

**Counting from 20-39**

**Counting from 40 to 59**

**Counting from 51-100**

**Counting from 60-79**

**Counting from 80-99**

**Counting keys to 3**

**Counting on**

**Counting Patterns-Up to 100**

**Counting Pennies up to 10**

**Counting Poem**

**Counting rabbits to 3**

**Counting shapes to 3**

**Counting shapes up to 3**

**Counting Strategies**

**Counting to 5**

**Counting up to 3**

**Counting up to 3**

**Counting Word Problems**

**Even or Odd Rules**

**Hundreds Chart**

**Is it Odd or Even?**

**Missing Numbers from 50-100**

**Number by 10's to 100 Word Form**

**Number Recognition and Counting**

**Numbers as Words**

**Numbers as Words**

**Order Numbers**

**Represent numbers up to 10**

**Represent numbers up to 20**

**Represent numbers up to 5**

**Say "Even" or "Odd"**

**Skip Counting**

**Skip Counting**

**Skip Counting by 10's up to 100**

**Skip Counting by 2's from 50-100**

**Skip Counting by 2's up to 50**

**Skip Counting by 3**

**Skip Counting by 4**

**Skip Counting by 5**

**Skip Counting by 5's up to 100**

**Skip Counting by 6**

**Skip Counting by 7**

**Skip Counting by 8**

**Tally Marks**

**What comes next? Numbers up to 5**Show All

**Add 3 or More Fractions with Unlike Denominators**

**Add 3 or More Fractions with Unlike Denominators**

**Add and Subtract Fractions in Recipes**

**Add and Subtract Fractions with Different Denominators**

**Add and Subtract Fractions with Like Denominators**

**Add Fractions with Unlike Denominators**

**Add Mixed Numbers with Like Denominators**

**Add up to 4 Fractions with Like Denominators**

**Adding and Subtracting Fractions**

**Adding Fractions With Like Denominators**

**Adding Fractions with Unlike Denominators**

**Addition and Subtraction of Fractions Word Problems**

**Arithmetic Sequences with Fractions**

**Compare Fractions**

**Comparing Fractions**

**Convert Fractions to Decimals**

**Converting Improper Fractions**

**Decompose Fractions Multiple Ways**

**Division of Fractions and Whole Numbers Word Problems**

**Division of Fractions and Whole Numbers Word Problems-Part 2**

**Equivalent Fractions**

**Equivalent Fractions**

**Factions of a Whole Number**

**Finding the Least Common Denominator**

**Finding the Reciprocal**

**Fraction of a Number**

**Fraction Word Problems**

**Fractions**

**Fractions in Simplest Form**

**Fractions: Review**

**Geometric Sequences with Fractions**

**Graph and Compare Fractions on Number Lines**

**How to Divide Fractions**

**How to Multiply Fractions**

**How to Simplify Fractions**

**Inequalities with Addition and Subtraction of Fractions**

**Mixed Numbers**

**mixed numbers as improper fractions**

**Multiples of Fractions**

**Multiplication of Fractions and Mixed Numbers Word Problems**

**Multiplication of Fractions and Mixed Numbers Word Problems-Part 2**

**Multiplying Fractions**

**Multiplying Fractions and Whole Numbers**

**Ordering Fractions- Greatest to Least**

**Ordering Fractions- Least to Greatest**

**Percents of a Number**

**Pizza Fractions**

**Reciprocals**

**Reciprocals**

**Reciprocals**

**Rounding Mixed Numbers**

**Simplifying Fractions**

**Subtract Fractions with Unlike Denominators**

**Subtract Mixed Numbers with Like Denominators**

**Subtracting Fractions with Like Denominators**

**Write in the Numerator/Denominator**Show All

**3D Shapes**

**Acute Triangles**

**Angles**

**Area**

**Area of a Circle**

**Area of a Rectangle**

**Area of a Square**

**Basic Geometric Terms**

**Basic Shapes**

**Capacity: Measuring Volume**

**Classify Quadrilaterals**

**Classifying Triangles**

**Congruent and Similar Figures**

**Equilateral Triangles**

**Euclid**

**Euclidean Geometry I**

**Euclidean Geometry II**

**Euclidean Geometry III**

**Euclidean Geometry IV**

**Euclidean Geometry V**

**Geometry Terms**

**Identify Symmetry**

**Isosceles Triangles**

**Midpoints**

**Name the Shape**

**Obtuse Triangles**

**Parallel and Intersecting Lines**

**Parallelograms**

**Parts of a Circle**

**Perimeter**

**Perimeter of a Rectangle**

**Perimeter of a Square**

**Perimeter of Polygons**

**Perimeter: Finding the Missing Side Length**

**Perpendicular Lines**

**Pi**

**Points, lines, and Rays**

**Polygons**

**Quadrilaterals**

**Rectangles**

**Regular Polygons**

**Relationship between Area and Perimeter**

**Rhombuses**

**Right Triangles**

**Scalene Triangles**

**Shapes**

**Transform Shapes**

**Trapezoids**

**Triangles**

**Triangles**

**Types of Angles**

**Types of Angles**

**Types of Lines**

**Types of Quadrilaterals**

**Types of Triangles**

**Types of Triangles**

**Vectors**

**Volume**Show All

**Addition & Subtraction**

**Are there enough?**

**Are there enough?**

**Compare in a mixed Group**

**Compare in a mixed group**

**Compare in a mixed group**

**Compare numbers**

**Compare numbers**

**Compare Numbers up to the Billions**

**Comparing and Ordering Whole Numbers**

**Comparing Integers**

**Comparing Numbers up to 100**

**Comparing Numbers up to 100**

**Comparing numbers up to 1000**

**Comparing Numbers up to 1000**

**Even or Odd**

**Greater Than**

**Less Than**

**Which group has fewer?**

**Which group has fewer? (2)**

**Which group has more?**

**Which group has more? (2)**

**Which Holds Less?**

**Which Holds More?**

**Which Number is Less?**Show All

**All About Variables**

**Compare Numbers up to 1 Billion**

**Convert Between Place Values**

**Convert to/From a Number**

**Even Or Odd: Arithmetic Rules**

**Even or Odd: Rules**

**Factors**

**Filling In the Missing Digits**

**Find the Order**

**Finding the Least Common Multiple**

**Fractional Exponents**

**Geometric Number Sequence**

**Guess-and-Check Problems**

**Increasing Number Sequence**

**Integers**

**Place Value Names**

**Prime and Composite Numbers**

**Prime and Composite Numbers up to 100**

**Prime and Composite Numbers up to 20**

**Range, Mean, Median, Mode**

**Rounding**

**Rounding: Review**

**Scientific Notation**

**Simple Math Terms**

**Standard and Expanded Form**

**Standard vs. Expanded Form**

**Understanding Integers**

**Understanding Integers**

**Use a Rule to Complete a Sequence**

**Value of a Digit**

**Value of a Digit**

**Word Names for Numbers up to 1,000**

**Word Names for Numbers up to 100 Million**

**Word names for Numbers up to 1000**

**Write Word Names for Numbers: Review**Show All

**Classify Numbers**

**Compare Numbers Written in Scientific Notation**

**Composite Numbers**

**Convert Between Standard and Expanded Form**

**Divisibility Rule**

**Even and Odd Numbers**

**GCF and LCM: word problems**

**Greatest Common Factor**

**Irrational Numbers**

**Least Common Multiple**

**Multiplicative Inverse**

**Number Pattern Word Problems**

**Prime Factorization**

**Prime Numbers**

**Prime or Composite Numbers?**

**Scientific Notation**

**Writing Numbers Up to 1,000 in Words**Show All

**Convert Tens and Units**

**Introduction to Place Value Through Addition**

**Introduction to Place Value Through Subtraction**

**Number and Operations in Base Ten**

**Place Value**

**Place Value Names**

**Place Value of a Digit**

**Place Value: Review**

**Place Values- Three Digit Numbers**

**Recognizing Place Value**

**Round to the Nearest Hundred**

**Round to the Nearest Ten**

**Round to the Nearest Thousand**

**Value of a Digit**

**Writing Place Value: Tens and Ones from 50-100**Show All

**Divide by 1**

**Divide by 10**

**Divide by 11**

**Divide by 12**

**Divide by 2**

**Divide by 3**

**Divide by 4**

**Divide by 5**

**Divide by 6**

**Divide by 7**

**Divide by 8**

**Divide by 9**

**Dividing Fractions**

**Dividing Large Numbers**

**Division Facts for 6, 7, 8, and 9**

**Division Facts for: 2,3,4,5, and 10**

**Division Facts up to 12**

**Division with Remainders**

**Division Word Problems**

**Long Division**

**Rules of Division**

**Standard Algorithm for Division**

**Words Associated with Division**Show All

**Multiples of 2,3,4,5,6,7,8 & 9**

**Multiplication Mix**

**Multiplication Word Problems**

**Multiplication Word Problems**

**Multiply 2 and 3 Digits, no regrouping**

**Multiply by 0**

**Multiply by 1's**

**Multiply by 10**

**Multiply by 10's**

**Multiply by 11**

**Multiply by 12**

**Multiply by 2**

**Multiply by 2's**

**Multiply by 3**

**Multiply by 3**

**Multiply by 3's**

**Multiply by 4**

**Multiply by 4**

**Multiply by 4's**

**Multiply by 5**

**Multiply by 5**

**Multiply by 5's**

**Multiply by 6**

**Multiply by 6**

**Multiply by 6's**

**Multiply by 7**

**Multiply by 7**

**Multiply by 7's**

**Multiply by 8**

**Multiply by 8**

**Multiply by 8's**

**Multiply by 9**

**Multiply by 9**

**Multiply by 9's**

**Multiplying 2, 3, and 4-Digit Numbers**

**Multiplying 3 Digit Numbers by 1 Digit Numbers**

**Multiplying by 1's**

**Multiplying by 10's**

**Multiplying by 11's**

**Multiplying by 12's**

**Multiplying by 2's**

**Multiplying by 3's**

**Multiplying by 4's**

**Multiplying by 5's**

**Multiplying by 6's**

**Multiplying by 7's**

**Multiplying by 8's**

**Multiplying by 9's**

**Multiplying Whole Numbers**

**Properties of Multiplication**

**Using the Four Operations with Whole Numbers to Solve Problems**

**Words Associated with Multiplication**

**Words Associated with Subtraction**Show All

**Addition Terms**

**Algebraic Terms**

**Angles**

**Choose Words Names for Numbers**

**Decimals with Operations**

**Dividing Fractions**

**Division Terms**

**Fraction Terms**

**Geometry Terms**

**Math Terms**

**Math Terms, Part 1**

**Math Terms, Part 2**

**Multiplication Terms**

**Operations with Whole Numbers-Vocabulary**

**Order of Operations**

**Percent Vocabulary**

**Properties of Operation**

**Rate and Unit Rate Vocabulary**

**Rational Numbers:Vocabulary**

**Ratios**

**Statistical Terms**

**Subtraction Terms**

**Words in Number Form**

**Write Word Names for Numbers**Show All

**Algebra Rules with Fractions**

**Complex and Imaginary Numbers**

**Conjugates**

**Convert Time Units**

**Equivalent Expression Problems**

**Expanding Algebra**

**Exponent Terms**

**Factorials**

**Factorials and Permutations**

**Factoring**

**Identifying Polynomials**

**Inequality Symbols**

**Laws of Exponents**

**Logarithms**

**Parts of Algebraic Expressions**

**Prime & Composite Numbers**

**Prime and Composite Numbers**

**Quadratic Equations**

**Sequences**

**Solve for Variables Problems (Add and Subtract)**

**The Empirical Rule**

**Types of Matrices**

**Types of Random Variables**

**What are Systems of Equations?**

**Write the Expression Problems**Show All

**Absolute Value and Opposite Integers**

**Add and Subtract Integers**

**Add and Subtract Integers Using Counters**

**Adding Integers**

**Adding Three or More Integers**

**Compare and Order Integers**

**Complete Addition and Subtraction Equations with Integers**

**Dividing Integers**

**Graph Integers on Horizontal and Vertical Number Line**

**Integer Addition and Subtraction Rules**

**Integer Inequalities with Absolute Values-**

**Integers on Number Lines**

**Multiplying Integers**

**Subtracting Integers**

**Understanding Integers**Show All

**Absolute Value and Notations**

**Arithmetic Sequences**

**Asymptotes and Discontinuity**

**Basic Functions**

**Basic Multiples**

**Basic Trigonometric Terms**

**Cosines and Sines**

**Ellipses**

**Extrapolation and Interpolation**

**Function Manipulations**

**Graphing Exponential Functions**

**Half-Angle and Reduction Formulas**

**Hyperbolas**

**Important Trigonometric Functions**

**Intro to Limits**

**Inverse Trigonometric Functions**

**Linear Function Terms**

**Linear Models**

**Linear Systems for Businesses**

**Logarithmic Model Terms**

**Logarithmic Rules**

**Maximums and Minimums**

**Multiplicity and Turning Points**

**Oblique Triangles**

**Parabola Terms**

**Permutation Principles**

**Polar Coordinates**

**Polynomial Theorems**

**Power Functions**

**Probability Events**

**Right Angle Terms**

**SAS and SSS Triangles**

**Sequential Notation**

**Series Terms**

**Sinusoidal Functions**

**Trigonometric Angles**

**Trigonometric Identities**

**Types of Exponential Growth**

**Types of Linear Systems**

**Types of Polar Curves**

**Types of Variation**

**Understanding Binomials**

**Vector Terminology**

**Vertical and Horizontal Lines**Show All

**2 Tests and Binomial Distributions**

**Alternative and Null Hypotheses**

**Categorical Variables**

**Confidence Levels and Point Estimates**

**Data Statistics: Mean, Median, Mode, & Range**

**Error Bounds and Sample Sizes**

**Inferential Statistics**

**Parameters and Discrete Data**

**Type I and Type II Errors**

**Understanding P-Values**

**Understanding T-Scores**Show All

**Basic Tree Graphs**

**Data Types and Conditional Statements**

**Determining Graph Types**

**Disjunctions and Conjunctions in Logic**

**Duality and Paradox Statements**

**First-Order Logic and Statements**

**Introduction to Early Logic**

**Introductions to Algorithms**

**Logic Statements and Conclusions**

**Postfix and Prefix Notations**

**Quantifiers and Counter Examples**

**The Basics of Cryptography**

**Understanding Element Relationships**

**Understanding Hash Functions**

**Understanding Vertices and Edges**Show All

**Ada Lovelace, Mathematician**

**Alan Turing, Mathematician**

**Apollonius of Perga**

**Archimedes**

**Blaise Pascal**

**Blaise Pascal, Mathematician**

**Carl Freidrich Gauss, Mathematician**

**Charles Babbage, Mathematician**

**Christine Darden, Mathematician**

**Daniel Bernoulli, Mathematician**

**David Hilbert, Mathematician**

**Dorothy Johnson Vaughan, Mathematician**

**Emilie Du Chatelet, Mathematician**

**Emmy Noether**

**Emmy Noether, Mathematician**

**George Boole**

**Gottfried Leibniz, Mathematician**

**Hypatia, Mathematician**

**James Maxwell, Mathematician**

**John Napier**

**John von Neumann, Mathematician**

**Joseph Fourier, Mathematicians**

**Joseph Lagrange, Mathematician**

**Julia Robinson, Mathematician**

**Katherine Johnson, Mathematician**

**Leonhard Euler, Mathematician**

**Luca Pacioli**

**Marjorie Lee Brown, Mathematician**

**Mary Jackson, Mathematician**

**Mary Somerville, Mathematician**

**Maryam Mirzakhani, Mathematician**

**Pierre-Simon Laplace, Mathematican**

**Pythagoras**

**Sophie Germain**

**Sophie Germain, Mathematician**

**Stanislaw Ulam, Mathematician**

**Thales**

**Theodore von Karman, Mathematician**

**Thomas Bayes, Mathematician**

**Wang Zhenyi**

**William Playfair, Mathematician**Show All