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...
Math TV
Math Tv: Whole Numbers
Helpful math video tutorials covering topics related to whole numbers including addition, division, estimation, expanded form, exponents, multiplication, order of operations, subtraction, rounding, and more. Choose a teacher and watch...
Math Mammoth
Math Mammoth: Subtraction and Addition in the Same Picture
This video demonstrates how addition and subtraction are related when looking at the same set of objects and models how to solve several problems. [8:13]
Math Mammoth
Math Mammoth: Fact Families: Addition and Subtraction
This lesson explains what fact families are and how to use them to answer related arithmetic facts. It also models how to solve two word problems. [7:54]
Math Mammoth
Math Mammoth: How Many More?
This lesson is an introduction to subtraction but without using the symbol yet. Instead, the operation is presented as 'how many more' and visual images are shown using one-to-one correspondence to demonstrate the difference between two...
Math TV
Math Tv
Helpful math video tutorials covering topics related to whole numbers including addition, division, estimation, expanded form, exponents, multiplication, order of operations, subtraction, rounding, and more. Choose a teacher and watch...