In this Khan Academy video tutorial, consider an alternate algorithm for subtracting multi-digit numbers mentally. This video is best for students that are already comfortable with using regrouping to subtract using the standard algorithm.
General Information
Subject(s): Mathematics
Grade Level(s): 3, 4
Suggested Technology:
Computers for Students, Internet Connection, Speakers/Headphones
Keywords: subtraction, mental math, regrouping, khan academy
Instructional Component Type(s):
Tutorial
Resource Collection:
Elementary Math specific existing tutorials