4th Grade Subtraction
Open Number Line for SubtractionVideo example: http://learnzillion.com/lessons/1583-solve-subtraction-problems-using-a-number-line
Subtract three digit numbers using expanded formThis video takes you through how to expand a number into each place value to help you subtract.
Subtraction using a number lineThis video shows how to “jump back” to find your answer.
Subtraction Using the AlgorithmSubtraction Using the Standard Algorithm: http://learnzillion.com/lessons/3160-subtract-using-the-standard-subtraction-algorithm