Reviewed and Approved

Subtracting: regrouping twice

Resource ID#: 126570

Primary Type: Tutorial


This document was generated on CPALMS - www.cpalms.org



In this video tutorial from Khan Academy, learn how to subtract in situations that require regrouping twice using the expanded forms of numbers, as well as the standard algorithm.

Subject(s): Mathematics
Grade Level(s): 3, 4
Intended Audience: Educators , Students , Parents
Suggested Technology: Computers for Students, Internet Connection, Speakers/Headphones
   
 
Keywords: subtraction, regrouping, regroup, khan academy
Instructional Component Type(s): Tutorial
Resource Collection: Elementary Math specific existing tutorials



Related Standards

Name Description
MAFS.3.NBT.1.2: Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Remarks/Examples:

Students fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. (Although 3.OA.3.7 and 3.NBT.1.2 are both fluency standards, these two standards do not represent equal investments of time in grade 3. Note that students in grade 2 were already adding and subtracting within 1000, just not fluently.
That makes 3.NBT.1.2 a relatively small and incremental expectation. By contrast, multiplication and division are new in grade 3, and meeting the multiplication and division fluency standard 3.OA.3.7 with understanding is a major portion of students’ work in grade 3.)

MAFS.4.NBT.2.4: Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Remarks/Examples:
Fluency Expectations or Examples of Culminating Standards

Students’ work with decimals (4.NF.3.5–3.7) depends to some extent on concepts of fraction