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3rd Grade Math

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Introduction

Lessons

Introduction Page Preview

Number Sense

Lessons

Place value Writing numbers in expanded form Writing numbers in word form Rounding numbers Comparing numbers

Addition and subtraction

Lessons

Addition with number lines Addition of Multi-Digit Numbers Subtraction using number lines Subtraction of Multi-digit Numbers

Multiplication

Lessons

Multiplication is repeated addition Multiplying with arrays Multiplication terms Multiplication tables Multiplying multiples of 10 Square numbers

Division

Lessons

Dividing with arrays Division terms Dividing multiples of 10 Understanding Divisibility Rules

Properties and mixed operations

Lessons

The Commutative Property: A Magical Trick in Math Associative Property The distributive property The identity property Fact families

Fractions

Lessons

Fractions overview Understanding fractions Fraction area models Fractions on a number line Fractions of a set Equivalent fractions Comparing fractions

Geometry

Lessons

Types of quadrilaterals Parallelograms Rhombuses Rectangles Squares Trapezoids Kites Regular polygons Perimeter Area of rectangles Area of compound shapes

Data and measurement

Lessons

Line plots How to tell time Elapsed time Metric units of measurement Customary units of measurement

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