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# Free 3rd grade math video lessons

This is a collection of free math videos for 3rd grade, showing varied exercises for each topic. They match Math Mammoth Grade 3 curriculum but will also work no matter which curriculum you follow (in other words, the videos don't rely on you having Math Mammoth curriculum).

These videos are usable for students, teachers, and parents. You can use them...

• To learn these topics yourself (if you're a student for example, or an adult needing a refresher)
• As lesson plans for teaching these topics. Often, one video from below can be made into several lessons with students.

Please choose a topic from the list. Please realize this is not a complete coverage of all 3rd grade math, and I hope to add to the collection in the future.

## Chapter 1: Addition & subtraction

Mental addition — several strategies explained

Review: mental subtraction — several strategies explained

More mental subtraction — more strategies explained

More mental subtraction: Unknown in an addition or subtraction

Mental subtraction with three-digit numbers

(An older video about mental addition and subtraction with 3-digit numbers, also available from a non-YT platform)

Regrouping twice in subtraction

Regrouping in subtraction with zero tens

Three-digit subtraction word problems and a puzzle

The connection with addition and subtraction

Mileage chart

The order of operations — parenthesis, addition & subtraction only

## Chapter 2: Multiplication concept

Multiplication on a number line

Multiplication in two ways (multiplication is commutative)

Understanding multiplication word problems, part 1

Understanding multiplication word problems, part 2

The order of operations, part 2 — parentheses, multiplication, addition & subtraction

## Chapter 3: Multiplication tables

I offer a full list of videos for the multiplication tables, which have been put together on this page.

## Chapter 4: Telling time

Telling time: "past" and "till" (review from 2nd grade)

Quarter till and quarter past

Telling time to the minute

Elapsed time in minutes

Using a calendar (future or past dates)

## Chapter 5: Money

Making change by counting up

Word problems with money and change

## Chapter 6: Place Value

4-digit place value (thousands) and expanded form

Addition and subtraction with 4-digit numbers — mental math

Rounding 3 and 4-digit numbers to the nearest hundred

Add and subtract 4-digit numbers — a lesson on estimation

## Chapter 7: Geometry

Perimeter

Problems with perimeter

More about area: Area of rectangles and the distributive property

Area units

Problems to solve: area of rectangles

Area and perimeter problems — rectangular shapes

## Chapter 8: Measurement

Measuring to the nearest fourth-inch

Feet, yards, and miles

Common metric units of length

Pounds and ounces (on a kitchen scale)

Grams and kilograms (on a kitchen scale)

Cups, pints, quarts, and gallons

Milliliters and liters

## Chapter 9: Division

The connection between multiplication and division

Divide evenly into groups — basic concept of division

Division versus multiplication word problems

Division by zero

Division with remainders

## Chapter 10: Fractions

Fractions on a number line

Mixed numbers with visual models, and on a number line

Comparing fractions, part 1 (two videos)

Comparing fractions, part 2

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