Module 14: Subtract TwoDigit Numbers Math 2A  Course Guide
Module Overview:
In this module, students will use a placevalue chart to regroup, subtract a onedigit number from a twodigit number, and rewrite numbers to subtract. They will subtract twodigit numbers without regrouping, subtract twodigit numbers with regrouping, and use a subtraction strategy to add using an input/output box.
Module Materials:
Lesson #  Lesson Title  Material(s) 

1  Subtract a OneDigit Number from a TwoDigit Number with Regrouping 
stacking blocks crayons or colored pencils pen or pencil 
2  Rewrite TwoDigit Subtraction 
crayons or colored pencils pen or pencil scissors 
3  TwoDigit Subtraction Without Regrouping 
scissors crayons or colored pencils pen or pencil 
4  TwoDigit Subtraction with Regrouping 
crayons or colored pencils pen or pencil 
5  Input/Output Tables (Subtract) 
crayons or colored pencils pen or pencil scissors 
Module Objectives:
Lesson #  Lesson Title  Objective(s) 

1  Subtract a OneDigit Number from a TwoDigit Number with Regrouping 

2  Rewrite TwoDigit Subtraction 

3  TwoDigit Subtraction Without Regrouping 

4  TwoDigit Subtraction with Regrouping 

5  Input/Output Tables (Subtract) 

Module Key Words:
Key Words 

Regrouping Place value Whole Part Input/output table Rule 
Module Assignments:
Lesson #  Lesson Title  Page #  Assignment Title 

1  Subtract a OneDigit Number from a TwoDigit Number with Regrouping  4  HandsOn 
2  Rewrite TwoDigit Subtraction  4  HandsOn 
3  TwoDigit Subtraction Without Regrouping  4  HandsOn 
4  TwoDigit Subtraction with Regrouping  4  HandsOn 
5  Input/Output Tables (Subtract)  4  HandsOn 
Learning Coach Notes:
None
Module Guiding Questions:
When a student starts a lesson ask them questions to check for prior knowledge and understanding and to review concepts being taught. At the end of the lesson ask the questions again to see if their answer changes.
Lesson Title  Question 

Subtract a OneDigit Number from a TwoDigit Number with Regrouping 

Rewrite TwoDigit Subtraction 

TwoDigit Subtraction Without Regrouping 

TwoDigit Subtraction with Regrouping 

Input/Output Tables (Subtract) 

Module Video Questions:
When a student watches a video take time to ask them questions about what they watched. Suggested questions for the videos in this module are listed here. Suggestion: Have the student watch the entire video first all the way through. Then have them watch the video a second time, as they watch it pause the video and ask the questions.
Lesson Title  Video  Question 

Module Suggested Read Aloud Books:
Take time to read to your student or have them read aloud to you. Read a different book each day. While reading the book point out concepts being taught. You may purchase these books or find them at your local library. Suggested things to discuss while reading the book:
 What is the main idea?
 What are three things new you learned?
 How does this book relate to what you are learning about?
#  Book  Author  Lexile Level 

Module Outing:
Take some time to apply what your student is learning to the real world. Suggested outings are below.
#  Outing 
