# Mathematics

**3D Shapes**

**Acute Triangles**

**Angles**

**Area**

**Classify Quadrilaterals**

**Classifying Triangles**

**Congruent and Similar Figures**

**Equilateral Triangles**

**Euclid**

**Geometry Terms**

**Identify Symmetry**

**Isosceles Triangles**

**Obtuse Triangles**

**Parallel and Intersecting Lines**

**Parallelograms**

**Parts of a Circle**

**Perimeter**

**Perpendicular Lines**

**Points, lines, and Rays**

**Polygons**

**Quadrilaterals**

**Rectangles**

**Regular Polygons**

**Rhombuses**

**Right Triangles**

**Scalene Triangles**

**Transform Shapes**

**Trapezoids**

**Triangles**

**Triangles**

**Types of Angles**

**Types of Lines**

**Types of Triangles**Show All

**All About Variables**

**Compare Numbers up to 1 Billion**

**Convert Between Place Values**

**Convert to/From a Number**

**Even or Odd: Rules**

**Filling In the Missing Digits**

**Place Value Names**

**Prime and Composite Numbers up to 100**

**Prime and Composite Numbers up to 20**

**Range, Mean, Median, Mode**

**Rounding**

**Simple Math Terms**

**Standard and Expanded Form**

**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**Show All

**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**

**Adding 4-Digit Whole Numbers**

**Adding Whole Hundreds**

**Addition Patterns over Increasing Place Values**

**Addition-Fill in the Missing Digits**

**Estimate the Sum**

**Inequalities in Addition**

**Properties of Addition**

**Words Associated with Addition**Show All

**Add and Subtract Fractions with Different Denominators**

**Adding and Subtracting Fractions**

**Adding Fractions With Like Denominators**

**Comparing Fractions**

**Equivalent Fractions**

**Fraction of a Number**

**Fraction Word Problems**

**Fractions**

**Fractions in Simplest Form**

**Mixed Numbers**

**Multiplying Fractions**

**Reciprocals**

**Simplifying Fractions**

**Subtracting Fractions with Like Denominators**Show All

**Multiplication Mix**

**Multiplication Word Problems**

**Multiplication Word Problems**

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

**Multiply by 11**

**Multiply by 12**

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

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

**Multiplying by 10's**

**Multiplying by 11's**

**Multiplying by 12's**

**Multiplying by 6's**

**Multiplying by 7's**

**Multiplying by 8's**

**Multiplying by 9's**

**Properties of Multiplication**

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

**Words Associated with Multiplication**

**Words Associated with Subtraction**Show All