Scholastic
Study Jams! Properties of Addition
Zoe from the StudyJams! crew brings the properties of addition to life by clearly explaining the meaning of the associative, commutative, and identity properties as she collects photos for an album. Listen to the included karaoke song...
PBS
Science Fundamentals: Compounds!
Hydrogen and oxygen form compounds that are both necessary for life and poisonous. Learn how this is possible in a video presentation all about compounds. The informative lesson describes how compounds form and gives an in-depth analysis...
Art of Problem Solving
Associative Property of Addition
Groupings are the way to go! The short video provides a description of the associative property of addition and gives an example. Learners view how to write the property using variables.
Math & Learning Videos 4 Kids
Place Value Lesson
Support your place value instruction with an interactive, visual representation brought to you by a video that showcases the family of hundreds, tens, and ones.
Scholastic
Study Jams! Relate Addition & Subtraction
Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: 2 Digit Subtraction
This video shows subtraction of two-digit numbers and place value to tens. [2:54]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Addition 2
This video covers addition by counting and using a number line, followed by place value concepts and addition of two-digit numbers. Practice problems are available. [12:26]
CK-12 Foundation
Ck 12: Elem Math: Overview of Mixed Operations Numbers to 100
[Free Registration/Login may be required to access all resource tools.] The video uses an example with addition and subtraction to show how to solve a multi-step problem including a description of the actual two-digit addition and...
Math Mammoth
Math Mammoth: Review: Adding and Subtracting Whole Tens
This video goes over how to add and subtract multiples of ten to or from a 2-digit number. [8:14]
Math Mammoth
Math Mammoth: Mental Math: Add and Subtract Multiples of Ten
This video goes over how to add and subtract multiples of ten to or from a 3-digit number. [9:54]
Khan Academy
Khan Academy: Subtracting a 1 Digit Number With Regrouping
Demonstrates how to solve 35 - 8 using drawings of base ten cubes to show the regrouping of ones and tens. [3:11]
Khan Academy
Khan Academy: Understand Place Value When Adding Ten
Demonstrates how to add two 2-digit numbers, with no regrouping, using drawings of base ten cubes to represent 1s and 10s. [3:16]
Khan Academy
Khan Academy: Subtracting 1s Using Place Value
Demonstrates how to subtract 4 from 46 using drawings of base ten cubes to represent 1s and 10s. [2:45]
Math Playground
Math Playground: How Do You Subtract by Regrouping?
This video illustrates how to perform subtraction by regrouping (or borrowing).
Khan Academy
Khan Academy: Missing Numbers in Addition and Subtraction
Demonstrates how to find missing numbers in addition and subtraction equations within 100. [5:44]
Math Mammoth
Math Mammoth: Mental Addition of Two Digit Numbers
This video explains some strategies that are helpful for adding two-digit numbers in your head. [8:00]
Imagine Learning Classroom
Learn Zillion: Decompose and Compose Numbers
In this lesson, you will learn about numbers and their parts by decomposing and composing numbers. [3:50]
Mucho Math
Algebra2go: Digits and Place Value: Part 2
This video will use expanded forms of numbers to help students understand place value. Additionally students will learn how to write numbers as word statements.
Khan Academy
Khan Academy: Intro to Addition and Subtraction: Basic Subtraction
This video lesson provides an introduction to subrtraction.
Khan Academy
Khan Academy: Strategies for Adding 2 Digit Numbers
Sal goes through multiple strategies for adding 2-digit numbers. [3:15]
Khan Academy
Khan Academy: Understanding Place Value When Adding Tens
Sal demontrates how to add 23 + 30 by thinking about place value. [3:15]
Khan Academy
Khan Academy: Understanding Place Value When Adding Ones
Demonstrates how to add 37 + 2 using drawings of base ten cubes to represent 1s and 10s. [2:36]
Khan Academy
Khan Academy: Subtracting 1s or 10s (No Regrouping)
Practice subtracting numbers less than 100 where there is no regrouping.